GG65 Rather than spiralling into thoughts about your DIL being the “gatekeeper” and you saying you have no idea why your son is acting the way he is, maybe first try respecting his wishes i.e. not bringing up topics of conversation that he has said he doesn’t wish to discuss because it only leads to arguments (and not getting others to bring up those topics on your behalf)
Lady has managed to do exactly that GG65; perhaps you missed that earlier in the thread where that is exactly what she achieved last week, allowing her son to lead the conversation, keeping calm and well done to her for doing that as it was clearly not easy for her.
She has already explained before you posted that she was surprised that her dad came in and commented and she hadn't expected that; she was not "getting other people to bring up those topics for her"; and she has already acknowledged that her dad's input unfortunately exacerbated things!
Lady has clearly expressed some recognition of her own part in the relationship previously; she is categorically not pushing all of her responsibility onto her son. She is trying to work out what her part exactly is in the relationship as things stand now!
Her son clearly is trying to maintain a relationship although he does bear responsibility for his abusive behaviour/statements to his mother that Lady gave some details of earlier in the thread! Those are well beyond boundaries and if Lady wished to she would be well within her rights to set that boundary, tolerate such abuse no more and have her own boundary respected. Last week she totally respected his boundary enabling him to behave considerably more appropriately; as a result Lady did not have to endure yet more extremely vitriolic abuse as per what she mentioned on here! Which was good for both of them!
Do you think you know when you are going to die?

