Did you bring the items to her as she asked? She requested that you not only craft the items, but bring them to her as well, so if you sold them, put them in your bank or otherwise moved them out of your backpack, she will not give you credit for the items.
You will either have to re-craft them again, or if you are lucky enough to find them in the Auction Hall you will be able to bring them to her.
Professor I have them both in my back pack. I think i sold one of them by mistake. I crafted one more of stingers scorpions again and she accepted. Sorry for my careless mistake. :P i want to bury my face now out of embarrassment.
*chuckles* Don't feel TOO badly, about accidentally selling one! I did the EXACT same thing, and had the same reaction. I don't think we were ready, as characters, for Felicia to 'take' our items, even though we WERE warned!