Why did Adalind have to "drink her mother?" Grimm's storylines seem to have been taken from the events of a historical princess instead of a fairytale one this time. Maybe this is from some biographical work that hasn't been quoted yet but the drinking her mother is too close to what 19 year old Marie Louise had to do in 1810, around the time of the Grimm Brothers.
They have already quoted Voltaire and Ferdinand Foch. Why not some biography of Napoleon and his women?
The Hapsburg princess Marie Louise was forced to marry the most hated monster in European royal circles, Napoleon Bonaparte. The French had executed the last French queen they had, Marie Louise's own aunt. Why would she feel safe becoming the next Empress?
Like Adalind and Nick, Napoleon and Marie Louise were enemies with only a baby in common, that they both wanted to protect. If Grimm is following some biography of the Napoleon-Josephine-Marie Louise triangle with Nick-Juliette-Adalind then the future is not too bright for Nick's son. Little Napoleon II spent his life a prisoner of the royals and was never heard from again.