Question: When Morrow bites off Eboshi's arm, the wolf's head has been somehow cut off her body. When the Forest Spirit took her life away, the head was attached. How did the head become detached?
Question: Anastasia basically lost most of her memories from hitting her head, as well as the possible trauma of what happened to her the night her family was killed. Could someone really lose most of their memories that way?
Answer: Amnesia exists, but it is a temporary condition. It does not last for the long-term and people usually regain their memory in a day or two, sometimes up to a week. Extreme cases can last longer, but not in the way it is depicted in movies. Some people may lose memories due to severe brain damage from a traumatic injury, but that is permanent.
Question: How long exactly has Belle been imprisoned in the Beast's castle? Asking because the first movie didn't look like Christmas was being celebrated by anyone.
Answer: It's unknown how long Belle was at the castle. This sequel, The Enchanted Christmas, was made as an afterthought to the original Beauty and the Beast film, and there was no consideration or explanation about how this would fit into the original timeline. This is a stand-alone film, and it is typical of how the more popular Disney animated films, such as The Little Mermaid, Aladdin, etc. have added-on stories that are usually released straight-to-video.
Answer: You can see part of the ooze flowing across Moro's neck, thus it gets severed.