why was ellie mad at Joel?

this question isnt as dumb as it seems, let me explain:

i just finished the game and so i rewatched the last scene from episode 6 (ellie and joel's last conversation) and in the show's version THIS is where Ellie finds out (with certainty) what happened in Salt Lake with the fireflies, not two/three years prior. So before all this why was ellie so mad at joel? I have watched the show but it was around when it came out and the game is fresher in my head.

Was it because of what he did to the Eugene? (i think that's his name, the therapist's husband and the weed grower)