You could tell her that you will let her do the sewing and you will just do the embroidery. I do some embroidery and charge $1 per 1,000 stitches (unless I have to digitize something, then the price goes up). but start off at $5 or $6 just to cover the expense of having to buy a particular color of thread. If they're asking for several of them, charge the $5 once, then just charge per stitch. People are amazed that a simple letter (although large) can be 27,000 stitches and and hour plus just to stitch out. But you also have to factor in your stablizer, which can get pricy.