Personally based on some of the things that were said I think Mia is pregnant as well as deeply hurt (of course) and although she may return, she will not be the same person that fell in love with the MC. I see Mom and Dad pretty much reconciling their marriage and the MC being slowly faded out of the Mom and MC relationship. All this leaving the MC to do whatever he wants and or go off to college. But as we all know this is just speculation and I could very well be wrong on some or all accounts.