Although the Joan of Arc resurrected by Gilles de Rais might have issues, it was impossible for either Chen Yu or Hiromi Jounouchi to tell Gilles de Rais that the Joan of Arc he resurrected might have problems, let alone find Joan of Arc and tell her they wanted to give her a "physical examination."
After all, for Gilles de Rais, if the person he resurrected was indeed the former Joan of Arc, that naturally would be the result he most wished to see.
But that did not mean that to Gilles de Rais, a resurrected Joan of Arc, who wasn't as he idealized her to be, would be considered a bad outcome. In fact, from Gilles de Rais' point of view, a Joan of Arc more akin to his ideals might actually be more in line with his wishes.