She's doing all the work right now and I think you should continue to let it go that way. She may be interested, but it doesn't sound like she's quite ready to take any kind of big step your way that would really let you know that. Touching your arm and vague references aren't enough, but I think it sounds positive so far. Don't ask her out yet, but if you get the opportunity to see her, make sure that you are interested in her life. You might also drop your own vague hint that you are interested if you want.
Me
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt
