lisa, when you put up a listing you get an option to block people with less than 1 feedback.
If you feel this person isn't for real you can cancel all bids and start again but block this persons ID, and also block anyone with less than 5 feedback....
Or if it turns out they'ren ot for real, you can put up a non paying bidder alert, which will get your listing fee and finaly fee refunded (providing this person wins).
Or just email them and ask them nicely they may just be a new mum to be and very excited, and she might just think you've put up great bargains (which does sound to be the case)....