Judgement and decree binding

Learned Members, I have question. Now the daughter has filed a suit for partition and seperate possession against the wife and children of her brother and purchaser of the property. The suit property was an ancestral property, which was sold by the brother of the daughter(plaintiff) . this brother was not at all living with the family he was with his father in law. Before this mother of the daughter(plaintiff) had filed a suit against the purchaser but the said suit came to be dismissed and appeal also dismissed. The daughter(plaintiff) was not a party to the suit. In my opinion the judgment and decree passed in the suit filed by mother is not at all binding on the daughter. Am I right? If any citations available please let me know. Thank you