Silver Bullet is simple and it's a great mod; but it's not a vv battery, as you know--yeah, LR atties and do not stack batteries. Ladies don't like big mods. Nothing wrong with a purple mini ProVari--but does she really need all those bells and whistles? It's the most expensive mod out there, and if she's not even committed to vaping yet, I'd go with the SB.
If she doesn't need a mod, VV Vision Spinners come in very pretty colors.
Juices? I never recommend juices because taste is so subjective. And I don't like Boba's (just don't tell anyone).
I like soft menthols and coffee (espresso) from Backwoods Brew, a couple of non-aromatic tobaccos, Kona coffee with chocolate and cream, and Boba tea from Ahlusion, Green Tea Lung Juice from Nhaler--I'm eclectic.
Good luck!