meh i don't think not wanting to marry him is treating him badly
she was not gonna accept a marriage proposal from anyone. it's marriage as an institution that shes not down with and afraid of in a way.. like she says she sees the fallouts..from her own experience with her parents and his parents and with her line of job all the time. she obviously has a lot of baggage and her own insecurities she can't admit
of course logan has/had his baggage with that and worked through it which is great for him but everyone has their own schedule of working through ****. i would've actually like to see his journey instead of just getting it told to us though. like what was the final push for him to open his eyes to his problems and go to therapy, etc