Why are some of you finding it so hard to believe that OP acted in kindness and with good intentions?
Because she is producing some well studied patterns of priorities and focus that tend to emerge in the context of parent/child estrangement. It is not impossible that her self assessment is spot on. But it is improbable. Spot on or not, as other posters have pointed out staying in place with her self assessment and perspective is not going to help her.
I think what some people struggle to understand is that a single lens held rigidly in place is a well studied, well established route to the OP being locked into a searing loss for the long term.
The intention behind the words of those who reflect that single lens back at her as valid, is kind and good. But "kind and good" as part of the construction of bars doesn't change the reality of helping to imprison a person in a world of pain.
The OP can believe, or have come to believe that she acted wholly in kindness and with good intentions. But her son could have a very different perspective of her actions. Truth is a very fluid thing when it comes to individual headspaces.
If they are locked in polar opposite perspectives and nobody budges to take a more unbiased, less self-flattering, deeply uncomfortable, "walking in somebody else's shoes" view of their participation of the the realtionship's collapse, the chances of resolution slip further and further away as time goes on.
The OP is evidently hurting from the loss of her child. She has been very clear she wants the loss to end and reconcilliation to begin. Which means there is still hope, still time.
But not so much if she keeps repeating attempts to end her pain with that single "I was kind and well intentioned, the other side were not" lens held tightly in place. Expecting different results from each overture that doesn't change in fundamental approach. Anybody encouraging her to do that, no matter how good a place it comes from, is potentially adding another brick to help reinforce the wall between her and her boy.
Look at your child. Imagine them very much alive, but lost to you. The searing intensity of that feeling doesn't suddenly disappear just because they get big and have to shave. A held hand and kind words are no compensation for a type of help that has a significant chance of supporting a parent into maintaining that kind of pain as major feature in their life. Potentially for all the time they have left. Because there can come a point where repeated overtures that are very similar in that "single lens" stance can create a titanium-like resistance to any future attempts at reconciliation. A person can change their approach with a new, more "other perspectives included" thinking ....and meet such heavily reinforced barriers that the shift they have so painfully achieved, never gets seen or heard.
When you are are at risk of downing, kind words that don't challenge the direction you are moving in can soothe away any half-hidden, fearful doubts about your internal compass,. And instead confirm the direction of the walk towards the tsunami. They can distract you from the steadily rising water levels. And it makes it so very much harder to hear to distant screams of people yelling "turn around, there's a life raft 130° to your left".
I don't want her, her son, her wider family in this club any longer than they have to be. It's a spectacularly shit club. The fees are outrageously high, and the only currency you are allowed to pay with is pain. Pain that can take your breath away with an intensity that can sustain for decades.
I'm not going to sit back while watching kind and well intentioned people potentially soothe her into accidentally signing up for that. I am a lot of not good things. I have more flaws, more faults, more accumulated fuck ups than your average human. But I'm not that cold and unfeeling that I can hide the thread and think "fuck it, it's her funeral".
That life raft is probably hole free and floaty at the nine month mark. She doesn't have to be swept out to drown in the seas of enduring loss, bitterness, or regret. If I could dive in and help pull her out of the strong current she's stuck in I would. But it doesn't work that way. When you are in the throes of estrangement you are very much alone out there. The only person who can change direction is you. Because only you control the degree to which you are willing to open your mind to the possibility of more than one truth.