Getting my sister into the show--how to start?

My sister M is 13, and I'm going to be spending Christmas Eve and Day with my family. I've been doing a series rewatch lately, and since M liked Fairly Oddparents I think she'd really like Danny Phantom. I have the DVD box set with every episode on it and need to pick the first episode to watch.

What would be a good intro to the series? I started with Splitting Images as my first episode, but I'm not sure it's the first impression of the series I want to make. Should I start with one of the specials? Just start with the pilot? Do a character debut, like Fanning the Flames or Bitter Reunions? Or, to keep on-theme for the holiday, would it be too forward in the series to do Fright Before Christmas?

What do you guys think?