Based on the family visits and people's responses, I finally realized where the difference is between Jen and Sadie.
Sadie's parents treat her as an adult. They show her respect and trust her judgement. I thinkthat Sadie has her own home, because these are hometown visits, not bachelorette house visits. I think that Lisa lives near her parents, where Sadie does not. Jen, I believe lives with them.
Jen's parents treat her like a child. When her dad is questioning Lorenzo, Jen acepts his questions as due. I don't think her parents treat her as an adult and don't seem to trust her judgement. As their baby girl, I can understand that, but she is 23/24 (sorry, I get the ages confused). She needs to grow up sometime. Is that Lorenzo's responsibilty?
Lorenzo's call will have to come down to the girls themselves. Yes, Jen will move, but will she also expect him to support her finacially, while she is in school? Sadie is out on her own and supporting herself (I am assuming based on job staus). Jen returning to school will also mean the return to campus life. I think Lorenzo will have to think very hard about the women her wants on his arm and the on he feels comfortable with as his wife. He loves them both, so his heart has made a decision and he seems to be struggling with thinking with his mind.