Thank you for contacting Just Answer. It seems to me that given what you've said that there is not much you can do but ask her out for a definite date. See what she does. If she does not respond positively then, I hate to be the bearer of bad news but you'll just have to move on. It's worth giving it another try.
I see that you are offline now. I'll pause here and await your response to see if there is anything you would like to add so that we may continue with our chat. If you have other questions, don't hesitate to ask. Just put Dr. Shirley Schaye before your response and I will be the one to respond.
Do it whenever you think she might be available. Go slow. Don't push things --- I mean sexually. Let's see what she does. Go for dinner, a concert, whatever. Then, if she does go, see how she is responding. Pay close attention to her cues. It might take more than one date. Then see where it goes.