I would like to let her know that she is absolutely hurting those who care about her the most, even though she rationalizes her behavior in order give herself "permission" to do what she's doing. Also, that the "small talk" and "checking in" texts she sends will cease. She really has a warped view of what our post-D relationship will be like, and I want her to know that.

We haven't exchanged a terse word throughout the last 10 months. It's kind of bizarre. But, as you have pointed out LH, it most likely is that she's just a low conflict personality.