She will want me to cash a check for her. My brother is power of attorney and will accuse me of taking her money. I am the power of attorney for health care and I buy everything and then I am broke. I am on Disability at home my Mom's caregiver. What should I do?
If your brother has financial POA, he should be making all the purchases for her with her money, not you. If she cannot make her needs known to him for whatever reason, then you need to tell him what she needs. Stop paying for this stuff yourself. Don’t do it. Hand it over to your brother.
Second, would the rehab place where your mom wants to get a permanent take checks. If so, why can't she just write them a check?
Third, I would not cash the check. Your brother as her POA needs to make sure her money is paying for her bills and that she has money for smaller things.
It sounds to me like finances need to be better coordinated between you and your brother.