Testshoot; my personal (and possibly offensive, but honest) views below. Hopefully you appricate my candor. Wow, she was really hot before the boob job. Looks... wrong... now. Let me guess, she has no self esteem? "I did them for me" Yeah, right. Self-image dosen't come from the mirror, or the livingroom kids. It comes from within, nothing outside can give you that gift. Nudes themselves are not a bad thing, quite the opposite, they are just us at our most raw and vulnerable. They can be incredible pieces of art. Now, if she wanted to take the nudes as a present for you, and maybe get you a set of bed sheets made with her on them, that'd be really hot. All this said, even if she just needs the constant reminder that she's hot outside, that's not nessicarily an "I'm cheating on you" kind of thing to worry about. Rather, this is something much more important...
This is the kind of thing that you've answered for yourself as soon as you ask it. Me, I think a house full of suggestive photos of oneself is pretty odd. Some on the thread don't (which I also find odd). None of that matters though. You asked the question which means YOU find it odd. If she really needs to do that, the relationship may not be a good fit. It strikes me as a fairly fundamental difference no matter how you approach it.
useless to me as a model because i shoot most of my stuff offline for ads and editorial. the contract she was offerd was a one time ad shoot lasting two weeks for one season with a well known (you probably have this store in your local mall) clothing chain. there was a few producers at dreamworks i intro'd her to that were falling all overthemselves for her to be in their projects. wherever she goes guys just flock to her, yet she is not the kinda girl to hook up at bars.
don't get me wrong i do art nudes etc all the time: http://testshoot.com/models/model_daniela/for/ but in context everything is acceptable... there is the old saying don't **** where you eat. i never date models, this was the first exception, but i now other guys have seen her naked or whatever at shoots, no biggie, but the context of her first apartment, moving in with her best friend (with a reputation)...