What is happening to the friendship of Rose and Lissa in Chapter 13?

Lissa is using compulsion on the royals and she knows Rose will disapprove. Rose is slipping into Lissa's mind more and more to spy on her, and she knows that Lissa would not like that. Since both girls are routinely doing things that they know the other will be upset about, they simply do not talk as much. The guilt is driving the two girls apart.