I really love the bargello, I haven't made it but plan to. Another quilt that's quite easy is called "Miller's crossing" I've only ever seen the pattern in an old Quiltmaker magazine, but have made one. It's basically 9 patches on point alternating with pinwheels.
I'm sure she'll love whatever you giver her though!
without the binding or being quilted
[ATTACH=CONFIG]242616[/ATTACH]
my pinwheels have borders because I didn't enlarge them enough and the 9 patches are supposed to have points, but again, didn't enlarge enough, but they're all consistent.
[ATTACH=CONFIG]242617[/ATTACH]