I can understand your hesitation about things, so go at the pace your comfortable with. If shes serious about wanting you back she will do what it takes to make it work. I also don't see a problem answering her question about the trust with what you said, you honestly don't know right now. Maybes its time that you need and to see her consistent actions that will do it, maybe not.
That 10 year anniversary is rough, I had to experience it earlier this month but not in the situation your in now so I can emphasize with you on that. Keep being awesome.
Accept what is, let go of what was, and have faith in what will be
