It's good that you told her.
It's good that she didn't run for the hills.
But
I'm a little bit worried about her "finding" the picture on your phone. I say this because I'll bet that she didn't get your "OK" first.
IMO She either has boundary issues - with no respect for your privacy, OR she has trust issues and feels the need to "check up" on you.
How do you think she would react if she found out you'd gone through her phone and discovered some secret of hers?
Still - I wish the two of you all the best and I hope you find nothing but happiness.