She sees all and tells everyone about it. She's the gossip girl of the group. It is her birthday when the incident happens. 

Audition Scene:

... means there's another line in between so pause
NOTE: IF IT'S IN ALL CAPS IT MEANS EITHER EMPHASIZE IT OR SCREAM IT
Leilani: Kendra did you HEAR the audacity Kesha just had. I was like what the fuck? Who even are you? She was talking to Avery about some shit with my sister and I heard them talking shit. I walk right over to that stupid hoe and I said, "What the fuck is your problem with my sister?"
[Switches to the Past]

...
Leilani: How the fuck would you know? KESHA IT'S ALL OVER LITERALLY EVERYWHERE!
...
Leilani: I'm done talking to stupid. Stop being a fucking slut! You need to close your filthy mouth and shut those hairy legs.