How do you find someone trustworthy to temporarily take charge of ill POA's duties overseeing her mother's care in rehab?

A friend of mine is very ill with a respiratory issue and stressed out due to her mother's lack of proper treatment in a rehab. She needs at least a week's worth of rest or may end up in the hospital and needs someone to care for a cat, if that happens. She said that the rehab is leaving her in bed for days in same clothes, not willing to transport her to outside dr. for treatment of serious wound she contracted there and won't let her mother leave to go to a different rehab but want her to start paying them since Medicare ran out recently. She thinks that the social worker at the rehab is blackballing her from getting her mom into another place as well. My friend is consulting attorneys and state eldercare ombudsman. She can't put her on Medicaid due to 5 yr. look back period and can't afford to get a guardian. Any advice appreciated. Thank you.