AT the beginning of last night's show, Cora got a heart out of a box and it made the other hearts/boxes glow; that's how she got the zombies to come to life and go after Snow/Emma/Mulan/Aurora.
Then at the end, when Cora was going to kill Hook, he told her to look in his bag, and it was Aurora's heart. I'm thinking Hook took Aurora's heart, and now that Cora has it, she can control Aurora - that's why Cora was talking to the heart and Aurora was saying what Cora wanted her to say. Only Snow/Emma/Mulan don't know that Aurora is now controlled by Cora. Hopefully Emma will continue NOT to trust Hook.
Am I the only one who doesn't like Mulan? She keeps saying she promised Philip to take care of Aurora, but she's not adapting to the situations they end up in, you know what I mean? Philip is dead, it's not like Mulan and Aurora are buddies or anything - Mulan acts like Aurora is a pain in the butt (which she was until she could "talk" to Henry in the dreams), so why not just let Aurora hang out with Snow and Emma and Mulan takes off on her own? I don't know - something just seems off about Mulan.