It's not too late for you to be free of the weight of what he did to you. He's dead. You are alive. You won, he didn't break you.
Can you see that even if you had have exposed him, it would have done little to help you.
It may be, not that he's dead, that others come to light, or long held suspicions are tentatively voiced. I will be very surprised if he only ever abused just you.
Don't think that you wasted any time, or chances or whatever, you did what you needed to at the time to get through this.
You don't have to (ever) do anything or say anything or go anywhere you don't want to. Your life is yours.
The only reason I say therapy may be helpful in time is that it enables you to be heard, to be believed, it enables you to safely voice thoughts and feelings that were made when you were a young child, overwhelmed by it all. There is no need to be that overwhelmed little girl any more, when you get to this part, you can start to lose the fear you held on to.
Then you can put the thoughts back in a safer place.
You are very strong, you have come this far alone, but now you may benefit from leaning a bit on others you can trust.
All I suggest is that you don't rule anything out, keep all the potential scenarios and solutions available, just in case.
I'm glad he's dead. The world lost a vile human being. There are far too many of them these days, one fewer has got to be a good thing.
Know that you're not alone, we are all thinking of you.