It's impossible to determine exactly which actresses are underage; you can tell the theater scene features teenagers, yet Hamilton was able to hire young actresses, including Bilitis herself. Luckily, it didn't end up being Off Topic.

It's strange that the director didn't opt ​​for a younger ...

Episode n. 95 - Traum des Vergessens (1985):
https://i.postimg.cc/87BTpw9J/13.jpg
YES! I instantly recognized this picture from this post:
https://www.first-loves.com/forums/viewtopic.php?f=3&t=12219&p=83416#p83416
(fourth picture down)

I had spent hours trying to figure out what it was ...