Was it a local pet store where she found it? I would think most breeders selling to pet stores (or pet store suppliers) would be selling mostly males. These snakes must be sold at a cheap, wholesale price to allow room for "reasonable" (yea right) markups for the retail store. Female pastels, and morphs in general, are just worth too much to sell that cheap.
You have to figure that a normal ball python that you can get for $20-$25 at a reptile show will sell for $60-$90 at a retail pet store. Most retail stores have significant markups. I would think for a pet store to have purchased a female pastel at even a good deal, they would definitely mark it up above $185.
I see this as I work at a pet store, and we can ALWAYS get normal ball pythons for cheap, but occasionally our supplier will have a baby morph available. They are almost always males, and the wholesale price is still not cheap. Most breeders, I would think, are going to keep their valuable female morphs to sell at a higher price than they would be able to sell to a retail distributor or store.
Unless someone who all ready owned the snake just decided they didn't want anything to do with it anymore and gave it to the pet store, I would think chances are it's a male.