How can I get POA over my mom if she lives in a different state?

My mom recently had a stroke. She is in the hospital and will soon go into a in patient rehab. Well when she is ready to come home I would like her to come live with me and my wife. Before she had her stroke she was living with a friend who is also elderly and has health issues. My mom receives social security and food stamps every month. It has recently come to my attention that the lady she is staying with has been taking full advantage of her. I feel that it wouldn't be a good idea for her to go back there. My mom can't speak and she barely comprehends what is said to her. (Praying that gets alot better in the rehab) Therefore she wont be able to give the permission or grant the POA to me. She lives in Georgia and I am in Alabama. I know states have different laws so what do I need to do to get the process started? I've never had to deal with a situation like this and I have no idea where to start. I could use all the advice and help I can get. TIA