This may sound obvious to the average Red Piller, but it came as news to me. Texting for hours on end does not build attraction. Texting is not a replacement for in person game. When you text her you are telling her two things: 1) she is your main priority at the moment, and 2) you have nothing better to do with your life than to text her.
Texting too much can cause strain. In my personal life, I once dated a girl who absolutely loved dogs. So I texted her dog meme after dog meme. You can guess what happened: she broke up with me, saying that all the memes were "pushing it".
Women respond to mystery. By being constantly available and open, you absolve yourself of all mystery. There is a difference between being a stranger and being mysterious. With texting, it does not build any sort of rapport. If anything, it detracts from your mystery, leaving her bored and in need of a new texting partner.
It's called a telephone. Our smartphones all come pre-installed with this spectacular device. What you do is you dial a person's number, hit send, and it automatically links up your voices together, if she is also available. I highly recommend making a good old fashioned phone call in order to gauge whether or not you even want to see this person in real life.
The irony of texting is that girls want someone who isn't available when they are available to text them. They want someone who is living a better life than they are, one full of fun, adventure, and excitement. So much so, that texting between the two of you is minimal at best.
Texting is like medicine. An ounce of it will do wonders. Chugging the entire bottle will make you sick. Similarly, texting once or twice a day is all good, but this binge texting where you go hours on end texting back and forth is not only not generating attraction, it is in fact detrimental.
Conclusion: Set up parameters in your day where you will only text during those hours. Fight the urge to text her all the time, regardless of how available she is. Build a life full of things that make it so you don't have so much time to text. Try using the telephone once in a while to gauge the type of woman you are communicating with.