It's interesting that Aspyn's solution to coming home, but not being a mom is to move in with Robyn. It makes sense for her to not move back in with Christine since she still had younger kids at home. Janelle did too. But, so did Robyn. She had Sol who was a year younger than Truely and was usually with her. She also had another baby on the way.
The house where Aspyn wouldn't be a mom was Meri’s house. She had no kids at home and tons of empty bedrooms. Yet, that's not even brought up as an option. Given all the reports of Meri abusing the family, it's likely that that's why Aspyn didn't even consider staying with her.