In my case, the psychotherapists agreed with my view of abuse as abuse, and were not trying to contradict my perceptions and feelings(and in the few times they did, mainly misinterpreting my feelings, I adamantly protested, and they believed me). I think it's a form of emotional abuse to contradict someone's feelings(eg. 'you're not angry, you're sad') or perceptions(eg. 'You're delusional anyway') and it's very damaging. It can happen with child abuse(eg. 'I didn't hit you, you fell out of bed.') and in some other abusive situations, but it is especially likely to happen in a situation where, by definition, the victims are seen as having incorrect perceptions and beliefs, and as not knowing themselves as well as the 'experts' know them.
In therapy for sexual abuse, the therapist views this person as a 'normal' person who had a bad experience, that anyone could have had, as opposed to an 'abnormal' person who's life would be just fine if they didn't have a 'disorder' interfering with it. In other words, the therapist sympathises because they view the person as just like them, and the situation they were in as one the therapist also views as unpleasant. So, like most NTs, they find it easier to sympathise if they view the person as 'normal'.
This is currently unfinished, I'll finish it later.