How does a kid that got the flu shot get the flu? By going to the Children's Museum during school vacation week, that's how. (I'm pretty sure anyway.)
After giving her teaspoon after teaspoon of water (and cleaning up tablespoon after tablespoon of puke) I finally gave in to my hysterical mother core and took Bear to the emergency room. They sent us home with some anti-nausea medicine and instructions to keep her hydrated.
She's now happily eating "hot cheese and chips" - the only lunch she would agree to - and watching Robots for the third time today.