I'm not going to lie, I actually really like this a lot. There's something about this fanfiction that makes me want to read more of it, you have a great style of writing! :)
Can I tell you this is honestly one of the best fanfictions I have read on this site? It has an original plot and concept, and it's realistic. Anna isn't a boring Mary Sue, as most OFC are, and Tony is, well, actually like Tony. It's well written and things are beautifully described. You'll probably be seeing a lot of me, because I'm going to raid your profile for more awesome stories, and I'll probably comment a lot :) Great job, and I can't wait for more! I love it