Her avatar can't talk, but she's been working on fine ingame motor control for a while; it's possible to draw in the dirt if you're fast enough. She's fast enough. After she gets a trap set up that she's confident will work, and nods at the birds (they're the ones who'll eat the crayfish; with this food source they'll be able to share some purple grain with the antelopes, who only eat plants) she writes HI SUICIDE in all caps.