Another episode dealing with Natalie (Mindy Cohn) finding her birth mother. However, in the episode "Adoption," Natalie had the chance to learn her mother's name but declined.
In season one Natalie decides she doesn't want to know the name of her first/birth mother. In this episode she wants to know. This is natural and normal for adoptees. Natalie Green was born in the 1960s and adopted shortly after birth. This is known in adoption circles as The Baby Scoop Era (BSE.) During BSE adoption was very secretive. Adoptive parents were given an amended birth certificate and told minimal information about the first/birth parents. Birth parents were told that they must never try to find their child. The only way that Natalie's adoptive parents could know the name of her birth mother was to do something that was illegal and considered unethical back then. This would've jeopardized her adoptive father's career as a doctor.