Thank you for such a clear video, that is really useful.
It's good her mouth is no longer open and her breathing seems settled and slow.
These are not obvious sneezes and while they could certainly indicate nose/throat discomfort, they almost look like hiccups.
The fact things have settled so quickly is a very good sign.
It may be something as simple as an irritation from dust / smoke or something she sniffed in. It is also possible that something tickled her throat or got lodged, such as a blade of grass.
I would see if she would eat something bland like a bit of chicken or fish and continue to watch her.
I would hope and expect things continue to improve rapidly.
Monitor closely for open mouth breathing, distress, nasal discharge, coughing etc.
I am online so do feel free to keep me updated if anything changes or the behaviour continues.