G.B.
I watched a video today and I'm not sure I could follow the instructions on the loom without having some great messes that have to be taken apart and redone a few times.
I think it's very age appropriate for the age listed on the box. It's too advanced for her. You'll be the one cleaning up all the bands and mess because she'll get frustrated and leave them laying every where.
As for the scooter she'll need a lot of long concrete space to get that scooter moving. If she's muscular she should have no problems. If you only have a short driveway I'd worry she wouldn't be able to get it going and enjoy the full benefit.