Fairy tale movie/series where a villain is dispatched with a poisoned comb

I remember something I saw on TV years ago. I have no idea how to search this without giving a bunch of clues that I remember.

It was a fairy tale movie. It had a long duration – it was either a movie split in parts, or had a few episodes. My feeling, which could be not accurate at all, is something about 5 hours. Could be 10, but I don’t think it would be less than 3.

The strongest clue that I have is that the final villain, which is a human female (a beautiful one), and probably a witch, is killed by being scratched by a, um, comb-like hair clasp with sharp teeth who have poison. Which, not very wisely, said lady was wearing on her hair. The finale, I think, was during a ballroom party held at her castle. Probably to celebrate the completion of some nefarious scheme.

I remember some few other things. The main protagonist was female, and I think it was the villain’s daughter. I also remember a bathtub involved somehow: either the protagonist’s mother tried to kill her in a bathtub when young, or the bathtub was the portal to the other, magical world.

I also remember some unclear (or clear but I was innocent back then) flirting between the protagonist and a human-looking wolf…during the course of their approaching the castle.

It is all quite hazy, but I feel I remember the first clue, about the villain’s death, pretty well.

Can you tell me what this is?