It'll keep it as brief as I can but with the relevant details...
I have a very small family. Just me, my mum and sibling. My dad died a few years ago (he and mum were divorced but had a good relationship). I have an aunt and uncle but no contact with them (family fall out when I was a child). No grandparents.
Growing up I had a very close relationship with my mum. She lives close by and we spent a lot of time together, seeing each ocher multiple times a week. She has always had bouts of depression (medication controlled and I suspect she is bi-polar, I'm not saying this lightly as I have a professional understanding of mental health). As well as being exceptionally caring and loving she can be very anxious and always has a 'cause'. Never in my life has she not been fighting an 'injustice' for somebody else- supporting adults with literacy, volunteering for charities, taking in people who are vulnerably housed, supporting survivors of domestic abuse.....it's had to explain but I think she thrives off being needed.
3.5 years a go a had my DS, mum was overjoyed and was the doting grandparent. When DS was around 9 months the HV flagged up some developmental concerns. Long story short- he was late to walk (now walks fine), late to talk (speech is unclear but he never shuts up now) and has a malformed pituitary gland (for which he receives daily hormone injections) other than that he is a happy, healthy and more often than not content toddler.
Obviously there was a period of about 18 months while all this was being investigated. It was quite stressful as we didn't know what the outcome would be. DS was under a consultant paedtritician, endocrinologist and HV- had regular blood tests and screenings. During that time (when DS was around 18 months) my mother was regularly spend time with him. One day, out of the blue she announced that she could no longer see him as his "suffering" was too much, she didn't feel my DH and I were "doing enough" - just to clarity DS has never been in any pain or discomfort, all issues have been developmental. She didn't "trust" the consultant we had as he "was focused on the wrong things". She also (bizarrely) said that I should remember that she had A level Human Biology and knew how the body worked. I know that sounds ridiculous but it's honestly what she said. That day she walked out and we have rarely seen her since.
After it happened I tried to talk to her but she said there was nothing to discuss. She never visits but seeing my sibling regularly (we live less than a mile apart). My sibling recognises there is a problem but doesn't want involved. On DS birthday she left presents at the front door when it was obvious we were all in and I had invited her round. I have often text updates/photos but rarely get a reply. In 18 months she has maybe text 3 times- each time I've offered to meet but she'll always pull out with a bizarre reason.
If I leave things as they are
*I'll possibly regret it.
*She won't have a relationship with DS and vice versa.
*I'll feel guilty I should have done 'more'.
If I continue to make contact
*it's emotionally draining
*Never in her life has she ever apologised and I do feel hurt at what she said so would need to address that which could big a bigger issue as I feel her mental health underlies all of this.
Thoughts- AIBU? But also, any ideas how to go forward?