I went to Gatlinburg, TN. They were selling queen-size quilts in one store for $799, with label that said "handmade in China". As a quilter, I was appalled, because my handmade quilts are a lot better quality.
If cost is no object, give her the cost (plus profit for your time and work). If she really wants it, she'll pay it. If she says that it is too much, direct her to the site where you found it for a cheaper price. If it is mass-produced, it will not hold it's value as long, nor would she have something that a lot of time and effort went into.