It's ambiguous to me. I didn't feel like they have (physicly) fight at all. yeah, one punch from Kara plus a serious quarrel/talk outside and that's it, not really hitting each other. Afterall Totty's the one got bruised eye while Kara has no injuries.
I'M YOUR OLDER BROTHER, YOU PIECE OF SHIT! DIE!WHO THE FUCK DO YOU THINK YOU ARE?