is it normal..

I was molested multiple times as a child, I was maybe 12, I'm 25 now.. and to be honest I had bottled it up so long that I actually forgot for years. this year my mom died in March and all these memories came flooding back with all the guilt and humiliation with it, I remember the acts and what happened.. what he did to me and made ne do but.. I don't remember who it was that did it.. is that normal..? if so why can't I remember who it was..