Here is a trick, try to lower her MagicAttack down to about 9k. It makes her heal for closer to 9,600 health, but she heals ALL THE TIME. This might not work, or be useful, if your SUPER high lvl, but I'm 3.5m and it seems to really help me kick some butt. It also helps those that have tested it at about 6-7 mil power but they report that her MagicAttack has to be closer, but not passing, 10k. Don't fully understand why it works, but it does.