I think it's a good sign that she acknowledged she had received both emails. Think about it...if the situation were reversed and you knew you weren't at least a little receptive to reconciliation would you even acknowledge receipt of an email like that with out being asked out right? I don't think so, I think you would be relieved if she didn't bring it up and wouldn't reference it at all to avoid conflict. I also think she tested the waters a bit with the "what would you do if I asked you to come back to CT" thing...Trixi had great advice for how to answer that if your given the opportunity in the future.
Patience is going to be the key here...patience and consistency.
I also find it interesting that she called you to remind you of your son's b-day. As you say...like you would forget...maybe she just wanted a reason to call you.
