I'd get her a pattern book geared towards teens or make her a binder full of ones you found online with the patterns in plastic sheet protector sleeves.
I'd get her the longer pins, a magnetic pin cushion (I looove those things!) and maybe a tool organizer. You could either make or buy one of those.
You could also start her off with good habits and include a pair of glasses - either with no change in vision or the reading types to protect her eyes.
There are just so many notions out there that if I were in the same position, I'd go overboard!
It also really all depends on what kind of sewing she wants to do.