We brought my 90 year old mother to live with us 2 years ago. She was abusive toward my children, pets, threatened to burn down the house if we didn't do everything she said and threatened that she'd "get us back" if we ever put her into a nursing home. After she threatened to hit me, her daughter with her fist, and threw her walker at me, we got her into a nursing home in the Alzheimers ward. The stress and strain of caring for an angry, bitter, vindictive old woman was too much for me and my family. Today I received a letter from the Department of Family Services that we "abused, neglected and abandoned her" and they want to talk to us. What do I do now?