Well, oof.
Kaname mom wished him to die, so he was always wanting to kill her, issue is he let it off on Kaede and by her twisted sense when her mother was abused by her father, she felt it like her but she was "laughing" as a coping mechanism not actual happiness.
Still believe Kaname will
commit suicide be killed Shiina, Kaname will see that and finally kill Shiina.
Thanks for the scanlation!