Just call her back and tell her you found one at Goodwill for $2, bought it, and she no longer has to find one. And then buy yourself one, whatever the price is and pretend you spent $2 at Goodwill.

I bought a Lodge cast iron skillet, average size I guess, maybe 8-10", at a Hispanic market for like $8.99. I tried to use it and get with the whole cast iron thing but it did not take. I found it too heavy and kind of a hassle since I'm used to the 12" deep non-stick ones with a lid that Costco sells for around $20. I donated it to GW and it was pretty much new. Later I saw the same skillet at BedBadBeyond for about $30.