While she might have few ideas about real language, symbolic representations are common. That's exactly what the image is, a brief concentric circle followed by something like a static shot of herself, lifting the head of some fanged insectoid-looking creature over her head with a snarl of triumph, and dozens of people like her cheering in the background. Triumph... and freedom.

It's rather dramatically in contrast to her currently very peaceable self, sitting here munching on a fish, although it might be worth noting after that image that half her outfit is made of huge fangs from at least a couple different somethings strung together. She points at herself just in case it wasn't clear.

The letters on the apron don't really mean anything to her, but she squints a little and points back at Lup, repeating the image of the apron with a couple chickenscratch markings on it that are something close enough, revising it briefly as her eyes swivel to the writing in the sand.