golden mom, please keep emailing her. I've been buying alot online recently and I've noticed that alot of emails are getting dropped. I myself have missed two emails in two weeks so far (they were automatically transferred to the spam box, even from a recongnizable address) and I've had very responsive sellers claiming that they've never received some of my emails.
However, since this happened in may, i think she should have given you the refund already. I think that it is very considerate of you to let her keep the deposit, however I don't think she should be keeping more than a couple hundred dollars after deducting the fedex charges because you've never received the bag. It is not a case of you changing your mind AFTER you got the bag so it would be really bad customer service if she wants to keep the whole deposit. Also, ask her how much she is charging for shipping. Please please pm me her ebay id, I would like to stay away from unresponsive sellers even if she only sells authentic bags.