Felt the same - really wanted the next episode right away. You could recommend to her what I did. I read the Wiki page because I wanted to know immediately how this happened (wasn't sure how much they'd get into the science on the show). I don't know much about nuclear energy but it is an
extremely well-written wiki page for lay people to understand.
Listened to the podcast that discusses the episode with the writer and it was great too.
Also got about half way through a youtube doc about Fukushima.
I feel properly satiated until next episode.