OP-- I have gotten frequent urinary tract infections due to my wel water water which has e coli.

I cured each UTI infection within about 6 hours with the following very safe herbal supplement-- "Cranberry with D-Mannose"-- the cranberry makes the urinary walls less attractive for the UTI biofilm, and D-Mannose is a sugar that is harmless to humans but that the bugs love to eat and then they die. So they get flushed down the toilet. It always works like a charm for me!!
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I now drink only filtered water, not the straight well water. For some reason the cranberry alone does not work for me, but the Cranberry with D Mannose is an amazing supplement!!

For your Mom-- I would take her home for a while-- do not let them get their dirty hands on her!! If you need to, get her a home help aid for a few hours per day if her social security can pay for this. Get groceries delivered if possible and visit her frequently give instructions to the home health aid.

I would also talk to a lawyer about a simple a power of attorney for your mom or better--- simply apply to the court for a 1) Guardianship and 2) Financial Custodianship of your mom--- BEFORE someone in social services beats you to it-- and takes control over your mom without your knowledge.

The guardianship means that YOU control what is done with your dependent adult. The Financial Custodianship means YOU control all her financial affairs, including her pension, real estate and social security. I don't think this is too expensive, and would be worth it before some predators clean her out and leave you with the bill.