I liked this. The humor was random but I found it funny because I actually do like random humor and it did work with the characters. I liked that Frankenstein's monster guy line at the start about how he was lying. The chubby pirate guy's derpy faces were also funny and that subversion of expectations with her scolding them was great. However, I think she should have scolded them a bit more though, she really just said one thing. And she should have given them the candy, for extra shock and to give satisfying conclusion to the conversation. This way we have no idea what happens with them. Though I guess that way we wouldn't know either, since the character really doesn't act like an evil witch. It's probably all a facade though, so her giving them the candy pretending to be a nice person would work and it would show she's trying to poison them or just weird them out. This way, she just sorta stops talking and drifts off. Also, now that I've read your description, the lack of lip syncing bothers me a little. The animation overall was pretty nice though.
Overall it's an entertaining entry for the jam, though it could have been better. This was most likely due to you having to rush it. Keep it up!