So why have you started texting back to her? Is it b/c she wants you to be more nice and talk "like normal people"? If that's your reason, then you are succumbing to her anger again.
What good does it do to tell her not to contact you at work, only to turn around and do it after she says she doesn't like it?
Have you guys notice the common denominator in the LBH'S here on the board?
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!