My sister lied and told mom that no other siblings wanted her. What do I do?

My mother lived with my sister who lied and told mom no other siblings wanted her, also lied we had stolen her money, put her in a nursing home and stole money used Mama's money to pay her house pmts and utility bills. Mama feel and broke her leg, arm, face and eyes swollen. I trusted my sister but now I've been told the truth about what happened. I am depressed and shocked, I need prayers for myself and brothers and sisters. She could have just let mama look at her purse and money mama didn't know her daughter had spent my mother done without things she was promised a new car never got i have forgiven my sister she told my mother i didn't want her at my home i would put her in nursing home and be mean to her, mama was afraid of her.