Marie-Thérèse Empires and Puzzles Hero Review - Pirates of Corellia

Marie-Thérèse is an innovative Pirates of Corellia event hero in Empires & Puzzles.  Her artwork is reminiscent of a Bayou mystic that you might have found in Disney's "Princess and the Frog" but if you can get by that allusion, she presents some interesting benefits and challenges in use.  
Marie-Therese was released in the second round of Pirates of Corellia heroes, along with Finley.  Her special skill turns all her allies into "zombies" with her "Zombie Blessing" if they are killed while the special is active. She is not the first hero to have this conversion type of special. That prize goes to Muggy of Season 2 Atlantis in Empires & Puzzles. The problem with these blessed zombies is they are not very strong - at just 500 attack and 500 defense. So, my initial impression was that I would not like this hero very much. However, after facing her several times in raids, I have found her a lot tougher on defense than her naked stats would make you think. Her special skill can be very powerful, with several elements, including healing, damage, defense buff and the zombie blessing.
Marie-Therese Empires & Puzzles Hero Card

Marie-Thérèse Hero Stats and Special Skill:

Base Stats:
Attack Defense Health
774 723 1301
  • Mana speed:  Slow
  • Element: Dark / Purple
Special Skill: Zombie Blessing
  • Deals 168% damage to all enemies.
  • All allies regenerate 612 HP over 4 turns.
  • All allies get +30% defense for 4 turns.
  • All allies receive Zombie Blessing. If the blessed hero dies in the next 4 turns, they will be reborn as a Zombie with:
    • 100% health
    • 500 attack
    • 500 defense
    • Special Skill: Poison Bite.

Marie Therese Ranking / Grading:

  • Attack: B-
  • Overall Defense: B
    • Tank: B
    • Flank: B
    • Wing: B
  • Titans: B
  • Raid Tournaments:
    • Rush: A+
    • Buff Booster: B
    • Bloody Battle: C-
Overall Marie Therese Rating: B
NOTE: I could have graded this hero higher, and consider her a borderline B+ because of her good performance in Rush tournaments and against titans.  However, her slow mana speed and the weakness of the zombies led me to a B ranking.  Do you think he should be higher, at B+ or A?