I had something similar happen to me a few years ago. The lady took her jolly ol' time shipping, when she told me she would be going to the PO the next day. I'd email her and she'd take 4-5 days to reply. I finally receive my box 3 weeks later and an item is missing. I email her again. She replies a few days later with some silly excuse, that she left the item out and didn't notice until after she had mailed out the box, but she would ship it the next day.
To make a longer story short, I never received the missing item, the other things she did send were not as good as she had described, and worst of all Paypal denied my claim because it had been more than 30 days since the transaction. I believe she was stalling to make it past the 30 days. It used to be 30 days, but some one mentioned 45, so maybe it has changed in the last couple of years.
Good luck!