I think you're wrong. Although that's what she says, the main problem has to do with her life having become a routine, which is something common for people in their forties, as they reach a stable lifestyle (work, family, children getting more independent..) and for different reasons their lives end up being repetitive.
In this specific case, their change of home hasn't fulfilled her expectations at all, specially considering what's happening with Liam who's always "busy", as well as her part-time job, which has had a negative effect on her, as she has too much free time. If she had a full-time job and Liam could have more time to spare with the family, this wouldn't be a problem at all.