A character which heals almost immediately, can reattach lost bodyparts, vampire with immunity to sunlight and nothing but a full body disintegration will be able to kill her. With some dark magic, ice, lightning and wind spells to be the cherry on the top.

Abit of Lina Inverse with some of Hellsing's Alucard in the mix.

Good thing all are stacked up with abilities which can cause disintegration or that would had been a really bad scenario right? I mean it is not 'indestructable' at least. Thank goodness.