You mention the
J'en Ai Marre performances and I agree they are great! I feel her
Pour Laurette J'en Ai Marre performance stood out as the best of these. There was also her
Moi Lolita performance in Amsterdam, which I also think was a wonderful performance. So, though there were many great performances, these two stand out, in my opinion.
You also mention her
J'ai Pas Vingt Ans performance at the Eiffel Tower. I think this is right up there with those first two, but I think what brings this performance up to that level is the interview afterward, in which she looked really lovely. I'm attaching a video of part of that moment. Since this isn't an actual part of the performance, I think this would have to be put at number three.