OP should not be taking advantage of due to having more free time.
Knowing that they are reading this, I want to make sure we are clear on the wording. OP should not be taken advantage of due to making the decision to: not have kids, be single, and work hard and save their money and live frugally with the (now lost) intention of getting their rewards later in life rather than earlier.
That distinction is important. As I mentioned, I've been in these shoes. My sister spent her life refusing to work full time jobs because it would "interfere with book club" and other such hobbies, she lived above her means, the one time she did have a full time job for two years she ate lunches out daily despite me warning her she should be packing a lunch to save while she had the opportunity. But no, she had to have a break because people might ask her a job related question if she was eating at her desk, it was just too stressful not to go out to a restaurant. She hasn't saved for retirement. And that was all her own business - not mine. (Until it directly affected me and she made it my business by declaring that due to her life choices, my life was going to have to be derailed.)
Meanwhile I was working two jobs, raising a kid (for a while as a single mom), packing lunches for my family, and saving everything I could with the plan that I'd work my ass off, and retire early and finally be able to take a breath and relax. Still frugally, but finally have some me time.
But no, now I'm stuck caring for my mom because she sees this as me having a life of leisure, and poor her, she has to work for a living (!). I don't even have it as hard as Daisy, because my mom's in assisted living a couple miles from me. But I handle her finances. I visit her every other day. When I went away for one week this year I asked my sister to come to town so my mother would have a visitor and I had to hear all about what an imposition it was. 4 days! My sister has seen my mother 4 days in the last year! And has the nerve to tell me what a burden it was. And she sends me little texts saying well, at least the finances are probably all under control now and not taking up so much of your time now that she's all settled in.
No. It doesn't work like that. She's been moved near me for almost a year now. This week? I spent 3 hours navigating her prescription coverage because it's open enrollment season with medicare, and her previous coverage is going to terminate in February because she moved out of that state then. The phone calls included getting someone who doesn't speak english AND is dyslexic. What's your address? 3711. OKAY. So that's 3771. NO. 3711. Okay. I'm sorry the computer isn't verifying any address at 37711. Every week, there's something financial that takes up hours and takes up real estate in my head. Jan 1, 2020 I have to remember to contact her assisted living place, the place that fills her prescriptions, to get them to switch to her new insurance. And make sure the old insurance is canceled. And make sure the new premiums are being charged through autopayments. And then get those coordinated through her HSA for reimbursement. None of this is just sticking a bill in the mail.
And every single night - EVERY night - I wake up at some point with intrusive thoughts about the harsh physical and mental realities of watching my parent's slow decline to death, up close and personal. And every single night, without fail, for a year now, I also wake up at some point with intrusive thoughts about how much I resent my sibling for dumping all of this on me while she waltzes off having her happy curated life, acting like my free labor is hers to take, like she's of course entitled to it, if that's what it takes for her to keep enjoying her life in the moment. It makes me feel like the rest of the family has decided for me that my life has no worth at all outside of serving their needs. I feel like Cinderella, before the ball.
My husband isn't awake yet. My parrot isn't awake yet - pretty soon he'll be waking up and telling me "Almonds! need Almonds" so I'm going to have to sign off. But right now, I'm sitting here in the dark, typing - because I woke up at 5:30am, laid in bed with my intrusive thoughts for an hour, and finally snuck out to another room with my laptop. But I want to tell you I am angry at you. I'm trying to imagine how I would feel if, on top of all this, my sister announced I should be paying "rent" into my mother's estate for all I am doing so my sister can inherit some of my savings in addition to my mother's. That's all - it's dark, I'm alone, I'm watching my mother die, it's consuming my life, and I'm angry at you on Daisy's behalf.