Awww you poor thing There isn't much you can do other than ride it out. When Jett has those days and you have no idea what is wrong and everything you do just seems to make the screaming and crying louder the only thing I can think of to do is to just cry with him! It doesn't help them and I'm not sure it helps me, but I just go with the flow.

I hope you find a solution soon. She hasn't eaten something different has she? Or something that they can be a bit sensitive to.... onion, garlic, broccoli, cauliflower etc?