Suggestions for disposition of my dad's home where my aunt also lives

Hello! I'm looking for recommendations or ideas from people who have had a similar experience as my family situation. My dad is 82 and lives in Florida in his own home that is paid off. He was living alone until his sister, my aunt, moved in with him last year. He had been saying that he didn't feel comfortable living alone anymore due to his advancing age and health status, so my aunt moving in was a lifesaver for all of us, including her since she was able to retire without working part-time.

I'm my dad's named executor. I have two brothers, and Dad recently redid his will to split all his assets four ways, between his three kids and my aunt. This was my suggestion, actually, because she will be helping to care for him as he gets older (she's 13 years younger). She already is in some ways, and luckily for all of us, they're very close and are truly digging living together! It's like watching my brothers and me in our parents' basement when we were kids. 😄

My question is about the house. They live there together, and we would like to find a way for my aunt to continue to live there after he passes since the home is paid for and expenses are just utilities and minimal taxes, insurance and HOA fee. My understanding in situations like this is that the heir(s) who want to keep the house would buy out the other heirs' share in the home so they become the owner. However, my aunt lacks the resources to do this, although she could likely pay the expenses mentioned above.

Has anyone here been in this situation? If so, how did you handle it? My brothers and I don't live in Florida, and I don't know how we'd manage this from our state. Any ideas for how this might work? Thanks for any feedback!