I seem to be a little short-fused tonight but,
She agreed and said "I'm sure you're right".
is not agreeing it is copping out.(IMHO) If your WS cannot see that the OW is toxic and a selfish user, nothing you say will sink in.
She also apologised about me having to feel like this.
This also sounds like a cop out and the only reason she is apologizing is that she got caught. If your WS had not been caught everything would be OK and you would not "feel like this." How about apologizing for having an affair?
Why give her three months? Why not demand that she show immediate changes now? Forget wondering about wasting time five years from now, you deserve a fully committed spouse TODAY.
You can try to put a whole box of bottle rockets up her behind but, until she decides to commit to you on her own, you are only wasting precious gunpowder.
I can see how you would really love the day to day stuff of your relationship- uncertainty, heartache, pain caused by her, not having a partner there all the time to help raise your child and no sex for a year. Golly, that sounds like fun.
Please stand up for yourself and for the relationship you deserve.