Yeah the main fuck up here was in cherry picking the photos to keep, you had so many opportunities where you yourself even went "this is a bad idea, don't do that" and then you did it anyway. And then she's sitting there crying feeling like you care more about looking at some picture of her body than about her feelings as a person, and then you're crying (hope to fuck she didn't hear that, she doesn't need the guilt trip) and you still. Don't just. Delete the photos to make her feel better.

I'm gonna assume you guys are on the younger side because this is the kind of dumb horny mistake a young man makes. And cause freaking out over a Google backup locked to your account is a bit much. The important thing here, apologize let her know you know you messed up and that it won't happen again. Don't ask for nudes again, maybe get creative with texting if you're that hard up. Yeah you messed up, but you can learn from this (listen to the BIG brain next time) and it sounds like you two do actually care about each other so you'll probably be fine.