Should I listen to my therapist's advice?

I was roomed and graped by my foster father when I was a kid and can't get over it and it's really being a bitch during AA meetings where everyone drinks because of similar traumas. I don't have PTSD but I have been in therapy for a year and still have these awful self-loathing reactions and obsessive thoughts in response to the material, although granted they don't last as long as they used to but they are still sickening and horrific to deal with. I proposed to my therapist that I go on an SVU + adultsurvivors + whatever else binge fest and she said no, that wouldn't be a good idea and that I'd get overwhelmed. But I'm tired of this and am wanting to do some pretty gnarly exposure therapy on myself atm. Why can't I? Won't it desensitize me?