Without looking, name even one of the characters that died.
Which means the sacrifice wasn't significant.
Sure, it made sense, but what *actually happened on screen* made it appear Baba Yaga set up the elf to give birth, then took her baby to free herself from prison by triggering an massive grief event on an epic scale, which makes way more sense than what ended up happening. I thought that was actually a really clever way for the demon to free herself and I was into it. Having that sucked away (never mind Baba Yaga's completely punchless return to her domain) felt like the show was knee-capping itself and making the story worse every minute events continued to unfold on-screen.