Undine entered the Wizarding World after the first Dark Lord retired, and graduated before the second Dark Lord rose to power.
Then, in 1969, Undine, a graduate of Ilvermorny, received an invitation from Headmaster Dumbledore to join the staff at Hogwarts.
For now, she's only an assistant teacher. Considering that there are hardly any safe places left in the world, and that she can't stay in the United States for personal reasons, Undine gladly accepts.
She decides she'll just have a look around and observe all the gossip from the Marauders' era.
But then...
#The assistant teacher doesn't want to become part of the gossip#
#Don't use the assistant teacher as an excuse to start fights#
#Win a fight and get detention, lose and get sent to the Hospital Wing#
#Stop asking the assistant teacher to cover your classes#
#Dumbledore! Give me a raise!#
Undine, the assistant teacher and nurse, a substitute-teaching tool for hire:
I have no house bias, so I hate every idiot student equally :)
I just wanted to write something with Snape as the younger one.
The immortal witch adopts a child trope (it has such a teacher-student romance vibe, hehe).
Extremely out of character, Marauders' era + Snape makes the first move (I'm going absolutely wild with this).
Theme: Stay positive