My spouse was initially VERY skeptical about my FIRE plans -- I will cut the cord 5-7 years before her -- but has come around some. She still won't sit down with me to see the numbers, but she trusts at this point (based on my money management to date) that I know what I'm talking about. But she has voiced concerns about me getting out of dodge -- without her, obviously -- at the drop of a hat for extended periods once I am retired. I know for sure she would go bananas if I were to say, hustle off to Costa Rica without her for a month to go surfing. I THINK I'll be able to restrain myself to some degree from doing that sort of thing, but if I'm being completely honest, then man, I know it might eat at me pretty hard to not be able to do what I really want to do. I hope to mitigate this all by perhaps working it out so that when we go on vacation (which we do regularly, 4-5 times/year), I might be able to send her home at the end of the week, and stay an additional week in our vacation location. We'll see. At any rate, that's a long way of saying that we don't see exactly eye-to-eye on FIRE plans, but I think we're generally okay, provided I don't push the boundaries too hard.
As to going back to the grind, that's just not gonna happen for me, and she knows me well enough to know that. But I'll be 53 when I retire. You are 35, and you've just enjoyed a year of ER. Would it be a big sacrifice to go back to work -- at what sounds like a not too burdensome opportunity -- for a year to stash another $70K (after taxes)? Only you can answer that.
And I get how you're feeling about the S.O.'s subtly pushing you back to work. In the early part of my career, my S.O. frequently let slip that she thought I was wasting my Top 10-15 law degree on my government job, when I could be making the big bucks in a large firm. It used to piss me off to no end, and caused more than a few heated exchanges. But over time, she relented and came to understand the reasons for my choice, and things have turned out fine (my choice has been validated over the long-run). Perhaps if you decide remaining outside the corporate world is the right choice, your choice too will be vindicated.
Good luck, I hope it works out for you, whichever you choose.