I 100% agree with Rianne. It's a big thing to tell someone, so don't pressure yourself into feeling like you have to do it now. Do it when you think you're ready. Whatever happens, I hope it's good. You literally are one of the strongest and most lovely individuals I have met and (again, I like to copy Rianne), you'll get there. I'm sure of it.
I truly hope that you're able to approach her and say that sometime---shout it from the rooftop if you have to---and to have closure and be less anxious about such an important part of your being.
You'll get there. I know how strong & capable you are.