Adam:
This is how I got my gal into straights, started out shaving her legs etc. for her, she loved the attention but really loved how smooooth her legs felt after.
After a few sessions I challenged her to take the blade herself and she was off and running. She really enjoys the challenge.
Now she shaves every couple of days with her own razors, A Fili, Friodur and a few C.V.Heljesrands. along with a custom brush and her own girly scented soaps are all in her rotation.
Now I get the benefit of her smooth legs and all I have to do is keep her razors honed up for her.