@luminance I don’t think the OP is comparing her son’s partner to other girlfriends but simply trying to say that she hasn’t had any other girlfriend treat her like this. If there was a history of her not getting along with past GFs that would speak to us of sone fault on her part.
As for the partner being on the autistic spectrum, that is a bit of a reach but could be true, however in this case am sure her son would have told his parents this in order for them to accommodate her needs and adjust their expectations of her socially.
Is not the kind of thing you forget to mention and is certainly not taboo in this day and age. Most people are happy to share this information in order for their GF/partner not to feel awkward.
Bereavement wipes out everything

