Sometimes it ain't about you this is bigger then Nino Brown!

Our relationship started out great it was basically the key to his heart, because his mother was his favorite girl. She accepted me like a daughter from the very start, showing me things I never knew. We became very close in the 9 years I've been with her son. I confided in her, bonded with her, laughed, and cried with her. If there was ever an emergency she was my first call, and she appeared in a flash like she had a cape. The one time we had a falling out it was a misunderstanding, and was rectify right away. Now it's been about 8 months now with bare communications with this lady I've grown to know and love. It's like one day she woke up and decided I was the enemy..... I'm not gonna deny that she is dealing with her own personal issues but to push me away I don't get that. At first I thought it was me being paranoid then I realized she was going out of her way to avoid speaking to me via the phone, she wasn't responded to text messages, and phone calls were quite rude. I would ask her what was the matter and she would always answer nothing I don't have an issue. Then my husband started to notice the shade she was throwing and he asked her what was up with herself and me and she was like I don't even bother with that girl, and he's like since when and don't you think that's an indication that something is wrong??? She immediately jumped to the defensive and played like she was the victim and I must be telling him bad things about her so basically we sitting up gossiping about her like we have nothing else better to do..... So I let that lady be even though it hurts me I can't kiss someones ass knowing I did nothing wrong. I had my 2nd therapy session today and the topic of her came up and I expressed how I felt, and how I feel. Yesterday the kids asked their father to see their Nana which I would never deny them access to her no matter what the circumstances. He goes I'm going to take the kids to my mothers and this overwhelming feeling came over me, but before I could say anything I had to understand what I was feeling and why? A new technique I learned from therapy. So now I'm able to articulate to him that this situation has come to this the separation. Something we use to all go do together now I'm being excluded not intentionally, but I refuse to sit in her face and be uncomfortable knowing she has an issue with me she refuses to admit to. So they didn't go yesterday but I spoke about how it being brought up made me feel. She asked what will be told to the kids when they ask why is mommy not going and I never even thought of it. Kids are not dumb and they sense with things are not as they should be. But I honestly don't have an answer. Fast forward to this evening he promised to take them and now they are getting ready to go and they ask if I was coming and I just shook my head no but there was no ask to why and honestly I had no answer if the did. Hopefully one day she realizes why she is really mad and admits it or realize it's pointless and that she wants to mend the relationship we once had. Either way I have to move forward day by day and not dwell on this situation because it has cause me to have a lot of anger and resentment and I don't want to come into the New Year harboring bad feelings for anyone.