Okay, a bit of an old post, but I see you're trying to solve a problem so that's okay.
Gris doesn't get Magical Training. That's not one of her advanced skills. And even is she did, I would suggest not getting the skill as it has an high INT requirement. Save her trait points for STR, AGL etc.
If you're having trouble with paralyzing opponents, keep in mind you DO NOT have to fight most of them. Sometimes the Rogue thing to do is to skip a battle.
Also, there's equipment in the game that offers stun immunity (halves paralyzing time). That helps, a lot.
Have a wonderful day.