You know what?
Different girls have different personalities (you don't say)
so some may like texting for comfort or some just like it for funny banter/flirting.
You have to know what is your objective for the girl, sex, relationship, or friends? etc.
Also, too much comfort texting or too much attraction texting is not good too. Strike a balance.
Generally though, girls who are more deniers rather than justifiers tend to prefer a higher amount of comfort texting. Vice versa.
the most important thing though, that you must always do in a text, is to make her feel emotions with your text. Don't create boredom.