Ashe wins points for telling Scar what she knew of Landels when he had first arrived. Because she has been useful to him, he considers her more tolerable than most other people he knows. Though the fact that she has manners and left an educated expression has something to do with that as well XD He'll probably continue to play nice to her, because he thinks she might be useful in the future.

And that's it. We are talking about Scar, after all XD