Eyes/Non-crusty Question about guinea pig eye

It looks like a classic case of hay poke to me. This is cause by a piece of hay or hay dust getting into the eye and causing a scratch on the eye ball.

This should be seen by a vet, who should check the eye for any remaining debris, perhaps stain the eye to confirm there is a scratch present, and prescribe an eye drop/ointment to put into the eye to help it heal properly, with treatment her eye should return to normal. Without treatment it could get infected which could lead to the eye needing to be removed, also eye injuries are very painful.

Ditto @Soecara. I'll only emphasize that eye injuries are very painful, so it's to her benefit to get it treated as soon as possible.