How much time has passed since she started to "ignore" you. And yeah, you should ask her for a date, man.
Long time ago when I was texting and dating girls (I'm in a relationship since 5 years), I met a cute girl in a chatroom. We spended way too much time texting before I asked her for a date. She said yes, and we should meet the next weekend.
During the week before the date, she didn't text me even once (probably because I finally decided to make a move and it was too much texting for her). I was a very stupid proud young man and I was very pissed off about her not texting me at all. Finally I ask her one day before about time and place and so on for our date. I texted her twice and she didn't respond until the day we were supposed to have our date.
I was so pissed off I said I don't wanna meet her anymore since she obviously isn't interested in me. Man that stupid arrogant behaviour was the best thing I could do. She totally was like "I'm sorry, I didn't mean to look like I'm ignoring you, I really like you. You know, I was very busy and blabla"...At first I was like "I don't give a shit man, nobody ignores me like that", but then...
We dated the next weekend and I got everything I asked for from her ;) We also became a couple later on. She always told me that she really liked me at first, but what made her really WANT me was my rejection :)
You know, sometimes, the nice guy is alright, but the asshole is sexy ;)