Melinda - Just wanted to welcome you to the board. As we always say here, sorry you needed to find us, but glad you did. We are a supportive and knowledgeable bunch
Unfortunately, you are in a difficult position as Nina mentioned. You obviously care alot for your grandmother and want to do the right thing for her. Can you talk to your mom or dad (not sure if it's your mom's or your dad's mom?) and ask them to talk to your aunt who has the POA?
I would definitely voice your concerns to your extended family. Your grandmother needs some assistance, and as Nina said, a caregiver could come to her at this point if the family is resistant to moving her. First, she really should be evaluated to determine what type of dementia / Alzheimer's she has.
I realize every family is different, and has different family dynamics going on. I know it all too well from my own family
. At least you can let your concerns be known, and share what you witnessed about your grandmother's behavior the 4 days you stayed with her.
Let us know how you're doing. We're here to bounce ideas around or just for moral support! Take good care -