Fairy Kitten. I hope you are happy with this kitten. But IMO if you have your heart set on a Devon, then the kitten SHOULD look like one. I know you don't want to show it, and that's perfectly ok. But its not a 100% Devon. Believe me, I've seen many Devon and Cornish kittens. Even if they don't have a curly coat for awhile, the type is there.
I would hate for you to be ripped off. She might be a nice breeder and lady and respond, but she's really not selling you a Devon kitten. I don't know if its a cross breed or what. Discount or not, I would not buy this kitten.
As a long time cat owner and a breeder of Cornish, I don't want to see people get gyped out of a "breed". I took a look at the website - there is a lot of red flags with this breeder. She can admit that the coat is not right (and she's right), but she's not telling you the entire truth about this kitten. Even if its coat was wrong, if it was a true Devon, it would have a little resemblance (ears, head).
Like I said before - my son had a 1/2 Devon and he really didn't look like a Devon and was not sold as a Devon - he was sold as a Devon hybrid (actually she gave the kitten to him). This breeder is trying to tell you its a Devon with a non-curly coat. And that is so wrong.