She can try my script for Ovale Spell Priority addon - http://wow.curseforge.com/addons/ova...mop-script/#p1. It's made to replace default one and reflects latest simcraft action priority list.
Destro part is really fine tuned and it will detects intellect trinket procs and suggests Chaos Bolts and Immolate casts accordingly, same as Simcraft. It has remainder for Havoc too, that will turn on if you have more than one enemy.