Healthcare Proxy Abuse?

Hi all. My hairdresser is in a difficult situation and I am wondering if she has any recourse.

My hairdresser (53F) has been diagnosed with early onset alzheimer’s. She is barely symptomatic at this time but has been medically diagnosed. She has three kids, two daughters & one son, her eldest (daughter) has been named her proxy.

Since this diagnosis, my hairdresser’s aunt died and she came into a sum of money (100k). My hairdresser wants to use this money, along with her other life savings, for an FDA approved alzheimer’s treatment infusion that slows the progression of the disease but does not treat it completely obviously. Her daughter said it was too expensive even though that’s what her mom wants.

Additionally, my hairdresser has a boyfriend of several years I am not sure exactly how many. But she loves him and they have a healthy relationship. She has been mentioning him to me for many years. The boyfriend suggested putting the money in a high yield savings account. My hairdresser relayed this info to her daughter who then accused her boyfriend of trying to gain ownership of the money. The boyfriend is an illegal immigrant. My hairdresser is not. They should have gotten married to get him papers but my hairdresser was scarred from her last marriage where her ex cheated on her several times. So, since the daughter was suspicious of him she had him deported. Now my hairdresser is miserable.

It gets worse. The daughters decide she can no longer be a hairdresser and tell her don’t worry, go live with brother (her son) and he will take care of you. They have her sell her hair cutting practice, and move in with brother in a different city. Brother works all day and has a girlfriend. Brother spends very little time at home with mom so she feels very isolated. Which is terrible and accelerates alzheimer’s progression. OK so my hairdresser has had enough. She says you know what, just let me move to the country you deported my boyfriend to, he will take care of me and that’s that. The daughters don’t like that idea so they take her passport and refuse to let her go. I tell her why doesn’t she order a new passport and change the address of delivery so they can’t intercept it. She says she tried but because she doesn’t have her own rights anymore, her daughter needs to be present to receive the passport or something? And now, to buy her love and say sorry, they say she in fact can have the infusions and a brand new tesla!!! As if that would fix all this.

So what can my hairdresser do to get her life back or establish a new proxy? When she tells her daughter she wants a new proxy they threaten her saying they will keep the money or that she is not allowed… when I googled it, it looks like you can just hire a lawyer and have a new proxy? But I imagine it can’t be that easy since my hairdresser is technically “mentally incapacitated”

tldr - my hairdresser’s daughter is abusing her mom through her healthcare proxy rights, how can she name a new one?

Thank you everyone

Location: FL