I update my previous position. Don't be a paranoid parent! Your girls will be fine... after all it was only a few hours...

Plants grown outdoors often experience temps spikes like that in the southeast US where I live... Nature is far more brutal on plants than most good growers are even when making small mistakes such as yours..

Shore, they didn't enjoi that little heat wave (if they are indicas), but slightly higher temps often encourage growth... too a point.. If above 100, an Indica plant will generally stop growth altogether...

They will be absolutely fine... just give them some water and maybe some extra darkness...
A light stress would have been far worse of an event.

Peace!