She didn't have the chance to do more than gasp before she was--before she'd already moved. She didn't really remember the moving bit, but that was probably adrenaline on her part. She gaped down at the brand new chasm a moment, still trying to determine how deep it went, before she finally turned her attention back to the Doctor.
"Might...might have a bit, yeah. Or just that bit of the ground was unstable?"