Wow.
I stopped by for all the same reasons that people watch moving dumpster fires...and also because I have a lot of compassion for those struggling with immediate family who are doing horrible things. I've lived through some similar awfulness and helped others with these sorts of things (and may still be dealing with one or more such situation even now), and these are some of the hardest things in life. You want to trust family. You want to believe them. You want to be loyal to them.
But sometimes you can't. Because they don't.
You can't give someone light by lighting yourself on fire.
I'm guessing you don't have kids, because I find that kids make it easier: you can put in all kinds of boundaries to protect yourself from insanity once you have kids who depend fully upon you. I suggest that you do the same, and look out for yourself here.
My advice to you:
1.
@former player is spot on that you need to run, not walk, but run from this situation. There's actual fraud and possible elder abuse here - you're seeing all the red flags.
2. Because of that, report it to APS and get some distance from it. That way, you did your part, and you can't as easily be blamed for it or sued/prosecuted over it when that time comes. You need as much distance as you can get.
Pro tip: banks and insurance companies
don't care that you're nice or that you said that this was a bad idea. Or that you had all of these great intentions.
Their money was stolen and they'll snag whoever is around to get it back - even if it isn't quite fair in your mind. So don't put yourself in that place where you're going to get whacked along with your parents. Treat this like the radioactive toxic crap that it is.
Stay far, far away from their finances, from discussion of it, from even the bankruptcy thing. It seems like you're headed there now - great idea pushing the bad-cop/bad news thing to a third-party financial person. But seriously: embrace some distance here and make this topic a non-starter at all times. That's the single best thing you can do for yourself here.
3. ACTIONS are the currency of the realm. ACTIONS have value. Words do not. You know that, at some level, but you need to learn to LIVE that.
You don't keep trusting a liar. People will lie, and lie, and lie again. You've been lied to repeatedly here, yet you - out of a desire to help - keep putting yourself right back into places where you listen to words and lies as though those words matter.
To be fair, it's naturally hard to ignore words - our ears want to listen. And that's even truer when dealing with a parent who has loved you. You
want to believe. You'd like to believe. Deep within you, you still want to believe that these loved ones are honest/reasonable/will benefit from your relationship. So you believe that little lie, which then sets you up for the real whoppers.
That's also why you've had a hard time keeping your boundaries: you've bought into the premise, which is a lie (the lie that you can help here or do something that they like or that will actually benefit them). You've bought into the lie that you're reasonable, so you can help.
Having done that, you're now going to buy into the bigger lies more easily. By the way, manipulative people can sense that. That's why SM keeps engaging with you, incidentally - she can smell that you're able to be manipulated, even if she hasn't always had it go exactly as she wants. It sounds like you've picked up on this dynamic as well.
But ACTIONS tell you otherwise--they negate the words here. These folks have lied to you repeatedly and will keep doing so. ACTIONS are what matter - ONLY actions. Listen to the actions. They lie. They keep lying. They're going to lie again. They're probably lying now - who knows what the full depth of the situation is. You think you know, and you still probably don't know the whole of it. Just rest assured of that: the actions here are screaming that at you. You're in a worse situation than you know, and it's only getting worse from here forward, especially if you keep engaging in it.
Your only defense here is to NOT ENGAGE in words about this - don't be lied to. Don't put yourself in a position where you're having conversations with them about any of it. Those are all just ways to get taken advantage of. They know that - your SM senses it - so they're going to play along and rope you in again. It's a rope-a-dope strategy. They need help, so you come in, then they tire you out until they squeeze cash/credit/something of value out of you.
It's not that different from the tactics that scammers consciously employ, especially the confidence grifters: they get you hooked into a premise and keep a relationship until they finally find a way to manipulate that into money. It's just a question of how and how long it takes.
Also, it's not even conscious: this is more of a learned behavior pattern. Your SM clearly employs it, and your dad clearly enables it, which means he's OK with it and in on it - as others said, probably more than you would believe or want to believe. He knows SM is lying to and manipulating you, and he has to be OK with it because he wants to keep her, so he stays quiet.
--
I love that you're on this thread, but I'm going to suggest something else: get a couple of wise friends there who know you really well and listen to their advice. Let them dictate what involvement you have here. Learn that you can't trust yourself with your dad/SM yet, and let your friends - who care about you - help protect you from this situation.
A little humility is a real virtue, and one that'll reap real dividends here.
Plus, I'll share another fact: helping people who don't want/need that help is actually hurting them.
You're giving them false hope of a false future and helping them prolong the fantasy the more you engage. You don't want to be an obstacle to them, so stay the hell away from it all.
Finally, I was going to observe something that seemed obvious/very likely to me, but I see that you've already picked up on it: SM is very likely to ditch your dad when the money runs out. She's done it before. And she's still an addict. You can't do a thing about it, nor are you likely to do anything but anger your father at this point if you talk about it, plus, it won't help.
I wish I had great solutions for you, but this is hard precisely because these folks are committing to their own self-destruction in ways that aren't solvable. It probably won't be solvable even if/when you and they think that they have hit rock bottom; it's a long journey which SM may never even engage in.
You need to practice disengaging
now for when it gets a little harder as they suffer more from their own decisions, and your desire to step in kicks up again. Stay away from it.
Finally, I'll add one last parting thought: words don't matter. Actions do.
Your words don't matter to them
either. In other words, you're absolutely wasting your time with talks and come-to-Jesus meetings. It's a giant waste of time. Their actions are committing them to a path, and no amount of your words is likely to change any of that or do anything other than make the situation worse by feeding into it.
Sure, they'll talk to you and engage with you - because they need and want you to bail them out - but their actions continue telling you that this is all just preventing them from hitting bottom.
Finally, here's a book suggestion that I have found helpful - a
book on boundaries.
--
I really wish you the best with this. (I wish that I didn't have more than my fair share of experience dealing with manipulative, deceptive people to draw upon - so I feel your pain.) I can see that you're moving the right way on things, and my only hope is that maybe something here can help nudge you towards truth a little faster and help keep you out of that unholy mess. It's a hard, awful thing when family make such godawful life decisions and it hurts everyone around them, so I'm sorry that you're even having to deal with any of this. That's
not how it's supposed to be. Instead, it's a pain to deal with.
If my experience is any guide, you'll at least get really good at dealing with difficult situations and manipulative behavior.
I'll say some prayers for you.