You got the result you were after right? You said you have feelings for her and wanted a relationship. She does too.
The whole "not sure if were ready" is her self doubt. She is fishing for reassurance/validation. Next time she brings it up acknowledge she has a point and tell her not to worry about it, just go with it.
Forget about this dont text her rubbish. Text with her, just dont get into serious discussions via text. Some things are best left for on the phone or in person. Respond to her texts, but not always immediately. Occasionally ask her how she is, what she is doing. Infrequently send her a text along the lines of 'just want you to know I am thinking about you.'
Even though you may like her a lot make an effort to keep detached. My main plate is a real sweetheart, funny, good in bed. But she is more into me than I am into her. That is what you want to achieve.