Yes, I agree, ask her out. But don't obsess over the "date" part of it! That's all I was saying (: I think there are signals that she likes you, definitely. I'm sure it'll be great. Remember, COMMUNICATION is a huge deal, and sometimes it's better to be as honest as you can instead of pondering on it and trying to find a subtle way to find out if she likes you. If you're really curious and ever confused or unsure about her feelings, the only way to know is to ask her and to be honest about your own feelings. It's hard to pick up hints from people you're interested in because you're always second guessing yourself. But if you need an honest answer, ask her for one! "So I feel like we've gotten to be good friends, and I think you're an awesome lady. The way I feel about you makes me a little nervous because I feel like you've given me some signals that you have some kind of interest in me, but I'm not positive. If you aren't, that's okay, you're still an awesome friend. But if you are, would you let me know? I'd like to go out sometime and maybe have a drink or dinner."

Of course you don't have to say that exactly, but being honest about it is going to help her see that you're someone who can express his thoughts and feelings upfront instead of going back and forth with confusing signs and signals from each other.