dude, honestly, you can get in trouble for it. if she has any sort or record that you sold her stuff or has it then she has a case... as far as legally getting the 400 or 500 back from her, you have to have it in writing with hers, yours, and a whitness's signatures on it (preferably a notary) I went through this a while back... looks like you're going to have to bug her when you can and other than that, cut your losses. sorry to be the bearer of bad news.