The main thing now is how to start conversation without being desparate. How to make it relevant. I know from last time that we at least have a couple things in common, but one of those is paintball and IDK how she feels talking about work or anything like that.
You won't know unless you ask.
Ask her how she got to working at the paintball place.
And if she plays much.
If she's not interested in paintball, or doesn't care to discuss work, then that's not an issue. You've not failed because you brought up something she doesn't care about. That's exactly how you learn someones likes/dislikes.
You can't be expected to know all the right things to talk about right away.
Also, are you chatting to her via Text, or Facebook, or something similar?
If so, just send her the message "How long have you worked at [paintball place]?".
You don't need to segue it into a conversation. Chatting by text can be much more direct at times.