"But not because she failed to call him "Daddy".
"
No, for not cleaning her room. The excuse is really pretty unimportant.
Not in this case it isn't. It is substantially important.
Actually, the psychological motivations are different and fascinating. In the case of the step-lesbian, there was an obvious self-esteem problem. She wanted the child to validate herself. In the case of the step-father, it is clear he seeked to control. And I'm sure that was obvious to the mother as well. Of course, she was probably attracted to that type and made her life-decisions accordingly.