Why not ask her for a "date?" Sound strange? It's not. If you can afford it, take her out for the evening. Go out to dinner, and maybe a really good movie. Then if you can, maybe go dancing somewhere. Women love to go dancing -- most of them anyway. And before going out, maybe you could buy her a corsage, huh? Maybe one to wear on her wrist or something.
Women like to be courted, and made to feel "special." If you make her feel that she's WORTH an evening out, that's going to put some romance in her.

And I'm not saying you have to keep doing this either, but special things occasionally.
Maybe bring her little gifts - perfume, a little teddy bear, candy, just little things, to let her know you're thinking about her and you love her. These are really special to women. They feel cared for and cared ABOUT. It gives them a sense of security. You won't regret it, believe me.
Just a few pointers from a VERY OLD lady! LOL Hugs, Lee