Yes, certainly. Parents' behavior can have a harmful effect on children. Abuse can be mental and emotional as well as physical.
The question is worded in a confusing manner. If you mean that Mother-in-law gets a check for the benefit of her mentally challenged daughter but does not use it for that purpose - then the question must be asked - How do you know this for sure? Maybe it frees up other money that she might not normally have to use for the benefit of the daughter. If you have proof that the mentally challenged daughter is mis-treated or in a bad way due to neglect - by all means contact Social Services or law enforcement to have them look into it. Without any proof - you don't have much.
It was mentally damaging his troops.
Your mother's son is you or your brother. Your mother's son's daughter is your daughter, or your niece. Your mother's son's daughter's mother is your wife, or your sister-in-law.
If she was mentally disturbed she would not have been the legal guardian, the only one who can give consent. The marriage is legal.
This question is inconclusive it has no correlation or form of obtaining an answer.
If Tara's daughter is your daughter's mother, and you are a woman, you are Tara's daughter.
Yes, a grandmother is a mother. A mother to her daughter. She is grandmother to her daughter's children.
If it is YOUR mother or daughter just say hi mum/daughter or Dear Mother or daughters name.
If Paula's mother's mother had only one daughter, that is the same as saying that Paula's grandmother had only one daughter. Therefore Paula is the daughter of the only one daughter that her grandmother had.
If Teresa's daughter is your daughter's mother, that means you are Teresa's daughter. Therefore, you are Teresa's child.
Niece. Your mother has children, you and your sister. So your mother's daughter is your sister. When she has a daughter, this is your niece.
Your mother.