But no, she took her own actions and for doing that in those circumstances, she is in the wrong job.
Yes, wrong job...at a telephone in reservations would be better.
At least that way she would be less of a danger to others.
Some years ago, we had a hostie start an evac because...she noticed slight tailpipe torching from number one engine during start.
She said nothing to anyone, just opened her door and started tossing pax out...both sides.
She was promptly terminated, and from her pay, the slideraft repacking cost was deducted.
This hostie was a silly fool.