Sewing machines aren't a very good idea for a gift unless you already know what they want. Honest.
It looks like it's about 45 miles to Anchorage which has sewing machine sales. When we can travel again, go down there and she can test drive different machines, it is about the only way to ascertain what she'd be happy with. I wouldn't recommend ordering one online if she doesn't have real sewing experience, good dealers offer basics classes which are worth their weight in gold.
Best wishes and let us know what you get!