I do absolutely agree, for home-spun paint jobs, Duracoat is the way to go.
Check out midwayusa.com. They have TONS of templates for different camo patterns (just search "Lauer template").
If you don't like flowers, pick up some filigree window stickers then. The possibilities are endless. You can find stickers for anything these days. I stole the idea from a guy on another forum once to use coyote paw-print stickers on a home paint job, winding a walking path from the stock, up under the belly, out on the far side forend. Shot the stock flat black, placed the stickers, shot the rifle in Lauer snow camo, removed the stickers, and I ended up with a wicked paint job.
Have her pick out some pattern/decals she likes. Bright Navy/Dark Royal blue really pops out from pink. Black or white are pretty straight forward. A swirling black filigree on a pink stock (paint it black, add decals, overshoot pink) would look pretty dang slick.