@jmjmjm1,
Boy am I the wrong person to ask about texting. My advice about texting is don't text at all if what you desire is more intimacy in a relationship. Texting trivializes a relationship.
I personally feel it's precisely what distances people in young relationships. I see texting's usefulness when you need to quickly confirm a get-together or the time for a date. But if you want to chat, that's what a phone call is about.
Use patience and restraint if you can handle NOT trying to pin her down as to where and what she wants from the relationship. Have a fun time and keep it causal - if you can! Respect her wishes as she's made them clear to you.
In her own timeframe, if she's ready for a deeper commitment to happen, she'll get there. If she can't, then you'll both know it. Pressuring will only make matters worse.