Griffie is pretty sure ey has no interest in cooperating with being forced through a Gate. For one, given that this is happening after rejected negotiation attempts, it suggests that the would-be sender knows perfectly well that Griffie won't benefit from being Gated. For two, the would-be sender's compelled puppet has broken free just enough to warn Griffie to run.
But there's nowhere to run, so Griffie summons eir snake to grapple the puppet and disrupt the Gate. Which … does not get dispelled, but instead forms a vortex. The party wizard tries to do something, but Griffie's too close to the vortex and gets sucked in before that happens.
Injuries from uncontrolled spatial discontinuities are pretty bad, but not so bad that ey can't also evaluate eir environment. Ey didn't get the breath knocked out of eir lungs, which is good, given that the air here is wrong and ey needs to hold what breath ey has remaining.