User blog comment:B214/Volume 22 spoilers/@comment-73.46.6.122-20160801213305/@comment-24.113.252.213-20160804021154

She can still give people super-regeneration. Valerie's brother, Marius(?), got most of his body destroyed, but he regenerated. Also, the Trihexa has super-regeneration due to being tinkered with by Qlippoth using the Sephiroth Graal.

So yes, reserection is different from healing, but the Graal can still heal (at least on par with Twilight Healing).