Who killed roger babbit?

Worried about the slowing supply of drugs now that Elton John is no longer supporting Roger, Alyssa starts to lose it. She confronts Roger in the film studio parking lot…

Alyssa: "We had a deal."
Roger: "What am I supposed to do? It's only temporary. I'll get another sugar daddy or sugar mama and then we're back to golden."
Alyssa: "Do you know the last time I went without drugs for more than a day? 'Cause I don't!"
Roger: "I've got to save resources for the film now. I need to cut you off for a while…"
Alyssa: "Cut me off?! What are you fucking crazy?! How am I supposed to steady the boom for your shitty movie if my hands are shaking? Give me something now!"
Roger: "I'm all out. Huei Yao was right. You are one crazy bitch!"