Absence seizures are nothing to worry about. Just fill her in on what she missed. I'm being serious - that's what paramedics are taught about dealing with them.
As far as the convulsions, don't try to hold her while she's convulsing. It'll cause further injury. Make sure she doesn't swallow her tongue while she's out. Being that she's 5, you may have to hyperextend her neck slightly to keep her breathing (place her head as if she's looking up).
You can't swallow your tongue without biting it off first. Don't put your fingers in your daughter's mouth trying to hold her tongue back. She can choke on your finger after biting them off. Don't even put anything in your daughter's mouth to help protect her from biting her tongue or swallowing her tongue. You're just going to fug up her teeth and gums when she uncontrolablly bites down on it. Or she will choke on what you put in her mouth if she bites down and breaks a piece of the object off and swallows it when she returns from seizing.
When she does return from seizing, role her on her side right away. She has a better chance of choking on her own saliva or vomit when done seizing.
Just a pillow under the head and wait it out. No restraining. Move poo out of the way so she doesn't slam her arm off something hard other than the floor. Protect the head with the pillow so it doesn't bounce off the floor too hard.
Grew up with an eplipitic dad.