Okay, in the previous thread you said she stood you up, how exactly did she stand you up if you never asked her out? Yes, you asked her to lunch, but she had other plans already, that's not standing you up, that's having things to do. You're stood up when you have definite plans and she doesn't show up. She gave you a golden opportunity to make a date and you completely blew it, you should have said sure, why don't you give me your number and I'll call you this weekend to set something up. All hope isn't lost though, on your next walk after class just follow up, ask when's she available to go out this week, have a definite plan for what to do, like just going out for drinks. You haven't totally screwed up yet, but your very close to doing it.