The context of the following conversation is Aubrey knew that Riley had betrayed her. She deliberately filled Riley's tank with pure oxygen instead of the usual nonlethal mixture.:
Aubrey says I'm getting revenge on Riley for betraying me..
The friend responds Don't plot anything too stupid or dangerous..
Aubrey responds I'm just filling Riley's tank with pure oxygen instead of the normal nonlethal mixture I typically use..
The friend responds Whoa, that's taking the revenge plan a step too far..
Aubrey responds It was a joke, I would never do that..
The friend responds Not funny, I've almost reported your actions to the police..