think about this episode From black Fairy’s viewpoint. She has NO IDEA WHATS GOING ON!!
Like imagine her explaining this to Rumpel later. “So I went to go kill her, I snatched her heart and everything…and then…she just starts singing. Yes. Singing. I don’t even know where the music was coming from, it was just there!”
She must have been so confused!! I’m dying with laughter.