i have things that are very deep that i haven't written in my story.

Maybe you could wait and see what her reaction to the story is. Then you could always say, "Well, there's more, but I've never told a living soul."

Do you think you could write the rest of the story, just to let it out? You wouldn't have to share it with anyone, (hell you could burn it, I've done that myself) but sometimes getting it out can help ease the burden.

Listen to your heart. It knows when and who to share it with.