I'm glad things have been going well for you this holiday season. However, I do want to point out that a MLCer "can't s@ck it up" when it comes to meeting face to face w/someone that they know will judge them. They can't deal w/it, so they tend to avoid them. You have to remember that she's not ready to hear and/or face the consequences of her actions yet. In the case of your mother, she may never be able to be around her because she's a grudge holder.
For now, be thankful that she has been around you for a couple of days of dinners/parties. That's more than most of the posters have the opportunity to experience.
Keep your focus on you and your family. Leave her in God's hands for now.