Don't let young girls on Episode.
I downloaded this app 2 weeks ago, enticed by the ads I saw frequently for Episode. After playing 4 stories, only one of them completely through, I was disappointed to find that 3 out of 4 had a trashy romance storyline. Themes such as cheating, love triangles, dating cruel boys, having sex, and getting pregnant very young aren't uncommon. Young middle school girls who haven't been in a healthy relationship with a male will most likely figure that the toxic romance themes in the app are normal, expected, or maybe even good. For older girls who know what a healthy romance looks like, go ahead and play.
There are also many other mature/bad themes, such as drinking as a minor, college frat parties, gambling, and disobedience to parents.
If your middle school girl is asking for this app, as many are, it's better to have them wait until they're older.