@SheSheSaidHummingbird I don't know how much my answer may be of use to you, but when my "mother" said to me that if I were a proper mother she would have a better relationship with her grandchildren, she went so far over the line that I was sickened by her. She never helped with my children and regularly criticised my parenting and their (perfectly normal) behaviour.
I told my therapist I felt like it was a bereavement and she said it was, I was realising that I had never had the mother an innocent (and in my case also adopted, so she went out of her way to get a baby then was utterly emotionally neglectful) baby deserved and that I never would have such a mother. Ooof.
For years she was difficult, when I brought her places I used to leave massive tips because I was so embarrassed by her behaviour (often racist).
Silent treatment was a regular occurrence, I don't know if I will ever get over the trauma of that even with therapy.
Lots more I could tell you.
I felt obligated to see her (read about Fear, Obligation & Guilt!) but dreaded every time. I was happy to help from a distance and often bought things online to send to her to make her life easier. It's amazing how many of those things "broke". As my therapist pointed out, if you fix the problem then she has nothing to complain and guilt trip you about.
Many many stories, but really, I had no wish to see her after she said something so awful, for me that was my limit. There was correspondence since but she took no accountability. Not only that, her side of the family have cut me off without trying to find out what happened.
I think I was in shock for a couple of months, disbelief a bit longer, then probably resentment and confusion. Calls from flying monkeys would set me back a lot, less so as time passes.
With therapy, podcasts, Stately Homes thread here & other resources, I have learned to insist on respect for myself. I don't feel sad any more at the loss of a relationship with my "mother"; I feel hugely sad for the little girl who deserved so much more.
When the (dwindling numbers of) flying monkeys come at me now, I say "What about me?". If they dismiss that question they also dismiss themselves from my life. I now know that I matter (after more than 50 f*&^%£# years!).
Sorry if this long story is no use to you, I am sad for you that you miss your mother so much. But given what you asked me, on a thread like this, I wonder do you miss the mother you had, or do you miss the mother you deserved?