Her Ability to ignore Impassable terrain and severe terrain like it's nothing is very nice.
Add her Wind Spell and Earth Spells together. The fact the Wind Spell turns her 2" melee strike into a 6" melee strike. And the Fact that you can Attack THEN move anywere you want to. Potentially forcing you opponent's model(s) to spend all there AP just to get into melee range and/or LOS of her.
( I haven't seen anything saying that you hafta move first then attack, just that both can happen during the models activation phase)
One thing I did notice is you said you need the 10 of masks to cast her earth Spell. All you need is the 5 of Masks
(her Ca of 5 plus the 5 of Masks = 10 with a mask)
Don't think outside the Box...Smash it into itty bitty pieces