Normally, when someone places a bid besides using 
the Buy-It-Now option, this option will 
disappear. And the fella has to bid as per normal 
auction.

A Buy-It-Now, will have only 1 bid. The "Date of 
Bid" from when the bidder placed the bid, will be 
the same as the "Ends  Feb-02-03 15:09:46 PST" - 
auction ending time.

Obviously, she didn't know what this "Buy-It-Now" 
feature is, or rather trying to fool you through. 
You can send those threatening emails to eBay to 
report her like what Drac said.