Paul Janka, has a technique called "Raising the Dead", that might help you.
The technique:
You text her some like this:
"Were those tickets for 8 or 9pm?"
They will likely respond, because they are intrigued and confused. When they do, txt them back and say that you accidentally sent the txt to the wrong woman. Often they will immediately feel a twinge of jealousy about the fact that you are obviously taking another woman out to some fancy event. About 60% (my experience) they will start txting you, wanting to know what you are up to (and subtly trying to figure out who this other woman is, and what you are doing). When they do this, blow them off lightly: "Hey, it's been a long time. I would love to talk to you, but I am really busy right now. Maybe we can hang out later."
About two days later, txt her again, with a specific event, time and place (something light, like coffee) and make it fairly close to the event. If she won't meet you, just blow her off again, and tell her, "maybe another time".
At this point, you will have either, shown that she is a lost cause (she still doesn't respond), or you will have rekindled some interest. The important thing to remember, is that, from now on, you show that you are a busy guy, with other women in your life. That way, you make her think, that if she is interested, she will have to make an effort to meet you. Ironically, that will increase your odds of attracting her.