All in all, if it needed to be two potions, given how different alive and dead and heal or not heal and all that, Felixa was fine with that. But that would help her cover her bases. And perhaps the latter aspect would allow Tibby to have a bit more of a normal life if he felt up to it, even just to go to a muggle movie or something without people staring. But she doubted it would be ready in time for that.
"Oh, no," Felixa hadn't meant that at all, "But healing potions do not always cover what they do. After all, cosmetics isn't their purpose. The potion for one does not need to be the same as the other, if that is easier." Truly there was probably a limited number of uses for the first, to cover evidence of cause of death, but she wasn't going to get it any other way. Wandwork left a signature.