I would make sure she had the basics for the machine and then give her a sensible amount to spend in a shop. However, make sure you go with her for assistance at the time. I started sewing on grandma's treadle at 7 and was given a machine a short time later where I had to wind the wheel by hand as I sewed. Somehow I managed. People thought that I would be sewing dolls clothes or such - like. I wasn't interested in dolls, and made clothing, furnishings and bags, so she may surprise you with her preferences as well.