Power of Attorney while Mother is still living I have power of attorney of…

Power of Attorney while Mother is still living
I have power of attorney of Mothers Finances,but my brother has found out about it,and I think hes maybe going to see if he can get Mother evaluated,and find shes not competent,and ask me for a copy of that POA,which I feel is not very smart if I were to do so.whats your opinion

My daughters grandmother (who adopted her) passed away.

My daughters grandmother (who adopted her) passed away.
Arleene made her power of attorney , because she has handled her every need for the past 2 yrs. Her and her 3 babies have lived in arleene house. She died sat in my daughters arms. Her oldest son is telling her to get out of her house . We cant find her will . She had said oldest son and daughter are getting nothing , the had little to do with her at all. can we find a copy of will in corts systems?