If Maiabel had been more adeptly trained in the art of evading magical explosions, she might be in a better position. But as it stands, she can only avoid enough of the blast to avoid dying outright - not enough to keep standing. The fact that the webs around her burn away is small consolation, given that she's already unconscious by that point. The magic she's cast on herself will eventually heal her to the point that she might stand back up... if the gas doesn't get her first.

Still, she did as much as she could. She's not presently capable of having regrets, but even if she were, she would have none.