Responses
The last chapter showed how though: Gilbert can eat Rosé's roses, since they contain her blood, when he tells it to Levi he discover that he can also eat them, but Friedrich can't (prob bc of trauma/don't want to drink Rosé's blood ever again), so he eats Stella's bodily fluids/parts like her hair, that Levi first crystalize before giving her to Friedrich.
So how will they feed themselves now…and when she becomes a vampire??? I dont understand a thing…