My sister gifted my mother's house to herself through her power of attorney she the remodeled the house to the tune of $22,000.00 and gifted it to my brother and then he gave it to his wife,I am making them put it back in mother's name. My question is can she recoup the $22,000.00 from my mother's estate after her death.She had no authority through a specific grant with her poa to gift anything of my mother's