facility denying POA access

I found this by google-search. They may be able to direct you.  

This is Chicago.gov’s Senior services department 

https://www.chicago.gov/city/en/depts/fss/

If you have POA, the facility usually can’t just block you without a legal reason. I’d call an elder law attorney ASAP and also ask the facility in writing why they’re denying access. Sometimes mentioning “attorney” and “ombudsman” makes them suddenly more cooperative.

That sounds incredibly stressful, I’m really sorry you’re going through this. An elder law attorney can definitely help you navigate this, and I hope you find someone who fights for your mom’s rights. Hang in there