Kurogh was a big name in Kurosia for many decades given his tactical genius, so for a long time, Feur did respect him. However, his personality is too soiling for Feur to find him attractive at any point. When he started showing his desire to become King, Athrenna found it humorous enough to tease Feur about it (before Burdohk passed, when Feur worked as one of her guards).

But, at least Athrenna got a kick out of it while it was still funny to laugh about 8,D