Tough subject, and complex as heck, but I'll do my best.
First of all, mary is right -- your counselor is the best person to address this with since he/she has your whole history, and can see you in person.
That aside, as a sexual abuse victim, what I can say for myself is this: what I did or didn't remember about my abuse (and there was plenty of remembering as well as not remembering) didn't really make a difference in terms of my own healing. Memory experts basically talk about how no memories are in fact, facts, but that they are our perceptions of an event, which, over time, change a great deal. In other words, our memories of events really don't offer us much -- it's what events leave us with that we have that is tangible.
In other words, the most productive thing to do is likely to focus on the issue at hand right in the here and now: what feelings or issues do you feel that this -- your suspicions, your residual feelings, reggardless of what did or did not happen -- is triggering and that you need to address?
In other words, if someone close to us dies, we can't call them up and vent, we can only work with what we have surrounding the issue. Make sense?
Depending on what you discover the issues are, what you can also do is flatly ask this person about what you suspect. While someone who abused someone may or may not be honnest, their reaction is often very telling, and it may give you some of the answers you feel you need.
I hope that at least gets you started.
Editor and Founder, Scarleteen
My epitaph should read: "She worked herself into this ground."
-- Kay Bailey Hutchinson