In Episode 3, Why did Mami didn't escaped hoặc did anything when món ăn bơm xen, charlotte was about to eat her head?

The attack was unexpected and likely simply too fast for her to dodge effectively. I'd say both of these contributed, but we don't know the specific reason. We do, however, know that Homura was aware that món ăn bơm xen, charlotte was stronger than Mami, which means they had at least one trước đó encounter that ended with Mami either beaten hoặc dead.