Help me please

Hello, I'm caring for my mother that moved in with me a week and a half before christmas. And my brother filed for guardianship over her, and unfortunally he got it. Well here is the problem he is supposed to be getting this so called guardianship account set up. And I'm living off of a very limited income. We are slowing running out of food, plus toilet paper. Now he is aware of this, because my older sister has told him. As me and him don't talk except for text message. Than he is raking me over the coal's about my mom's estate. Now she wanted to come and live with me, as I've been the one taking care of her for the last 14yrs.

Now my mom goes thru toilet paper like I don't know what. She can go thru a whole roll herself in around a day and a half. Plus she eats like a freaking termite. She eats from the time she gets up to the time she goes to bed. I've tried to explain to her why we have to go easy on things. Because she has always had the money just to go out and buy more when she needed it. Yes I know I'm trying to talk to someone that has know reasoning left. But she dosen't understand this whole concepts of guardianship. She said how can the bank do this. Just give someone's money away like that. I don't know what to do. I'm about ready to go nuts, for one this always leeds into a heated disscussion. And then I feel terriable about what went on. Plus to I haven't been away from her over a month now. Plus I've never been a parent myself. I've always had my freedom even when I was married. So my parenting skills are not the best. Does anyone have any suggestions on this matter.