Sounds way too coincedental that the bidder also has the name Kay. That would make me leery of the bidding as well.

I've had friends ask me to bid on their items before to get the price up if it's not going up, but I've never done it. It's just not right or fair to the other bidders. I wouldn't want that done to me. Whatever my stuff sells for, is what it sells for, even if it's really low. If it's something I know should go high, then I put a reserve on it, otherwise, nothing, or I just FreeCycle it and be done with it.