He might also partially transfigure her body (say, the contents of her stomach) to unicorn blood. I don’t think that would work as well as one might think, since transfigured things are detected and treated differently by magic (e.g., goblins detecting transfigured gold), so I doubt the transfigured blood would work for raising the dead. (In magic logic, the ritual probably uses the blood as a symbol for a sacrificed unicorn or something.)
Interestingly, the fact that transfiguration is not permanent is not that bad. If transfigured unicorn blood worked for the duration of the transfiguration, it could still help. (For example, the temporarily revived person could create a horcrux, or get a precise and accurate brain scan for uploading, which might be the same thing in-story.)
He might also partially transfigure her body (say, the contents of her stomach) to unicorn blood. I don’t think that would work as well as one might think, since transfigured things are detected and treated differently by magic (e.g., goblins detecting transfigured gold), so I doubt the transfigured blood would work for raising the dead. (In magic logic, the ritual probably uses the blood as a symbol for a sacrificed unicorn or something.)
Interestingly, the fact that transfiguration is not permanent is not that bad. If transfigured unicorn blood worked for the duration of the transfiguration, it could still help. (For example, the temporarily revived person could create a horcrux, or get a precise and accurate brain scan for uploading, which might be the same thing in-story.)