Am I being put on and perhaps why?

Since word got around I inherited an estate with antiques, a co-worker has been asking me if I have certain items. When I say "yes", she asked me to bring them into work on the chance she might like to but something, but when i do, she always finds something wrong with it so she doesn't want to buy. I'm getting tired of lugging in stuff, especially fragile pressed and cut gl. It almost seems like she just wants to see me fall over myself hoping she will make a purchase, but she really has no intention of doing so. I have stopped responding to her inquiries by just saying "No I don't have any" or something to that effect. I just wanted an opinion of why someone would do that. Thanks in advance.