I really feel for you & the bunny. Nothing could have been worse than leaving her with that horrid person & I hope that man falls off something very high in the near future (I'll be there to push him).
It's very hard to diagnose anything over a forum but it sounds like this poor rabbit has been through **** & back. Teeth don't just break off in a bunny's mouth without help. Whether the poor little thing has been used for amusement by this thug, we don't know. All you can do is make sure the bunny is kept warm & not too stressed from the experience. As long as she is eating & drinking, that's great. The eye infection could be something that may need to be looked at closer as it is probably due to the teeth that may have caused some kind of abscess inside the mouth which will affect the eye so topical treatments for the eye will probably not fix the problem.
Good luck with her & I really hope she makes it! Keep an eye on the idiot neighbour & report him to anyone if you think he is mistreating any animal in sight.