Hey Harrier - I'm not 25 but saw you reach out to her and so I thought I'd drop by to see whats up. Here's my take:
Sounds like a lot of really good interaction over the holiday which seems to me to be a good thing when you are in the process of piecing things back together.
Trying not to mind read but the time your W spent with your mother is telling. Without knowing the full nature of your sitch but looking from the outside, in I would say that your W is making a real effort to change as you are. You said she didn't have a strong relationship with your mother so maybe she is trying to change that.
I think she may also be trying to better understand YOU from the perspective of your mother. Kind of like, "what is it that makes Harrier tick" so that she can adapt and better understand how to make things work between you two.
Regarding the supposed call to the Mentor and friend of OM, I think if there were trust issues between you two and your W truly believed that you made the call, I can sort of understand her reaction. Of course, since you didn't make the call it is going to be important that that point be proven in a loving way so that the trust you two are trying to reestablish isn't ruined.
Maybe confirm for yourself that you didn't make the call by accident and then ask your W if she had had a chance to check the phone records because "it is important for building and maintaining trust that you are confident that I did not make the call." This way it is not so much of an "I told you so" as it is more of "I really need for us to trust each other."
Anyway, that's my take. One has to wonder though if this wasn't a set up on the part of the OM to drive a wedge between you and your W.
All things considered, it really looks like things are moving in a super positive direction for you. I wish you continued success in your endeavor!
Me51 W53 S17 S14 M22 T25 Bomb-9/11; A-11/11; I move out 11/11
It's easy to find our bottom, it is our top that requires cultivation.
Every rough spot adds to our emotional constitution. -Barney Fife