Her Will, Wild, is best suited for a character like Ryu or Cray. Ershin, who's hit ratio is not high, is a bad choice.
Her 1st 2 requirements can be met as soon as the player gets her. Her last requirement, is out of reach at that point of the game and is unobtainable until Chapter 3 (unless the player learn Blitz from an enemy prior).
Excluding Blitz, all of her skills are great and useful.