I live in Parker County, Texas.
I am trying to get legal guardianship over my 15 year old niece.. her father has full custody of her. Her mother, my sister, is threatening to take her away from me any way possible if I get her. The reason she doesn't want to be with her mother is because she would always leave her and her 6 year old brother at home alone while she went out to the club or even out of state for the weekend to visit her new husband.
Her father did have a letter notarized saying he was giving my husband and I legal guardianship but I want to know if that is enough to keep my sister from taking her away.