Victor becomes a huge nerd. He doesn’t make friends. He doesn’t write home, not even to his hot sister/future wife, Elizabeth.
On the plus side, Victor’s studies advance rapidly, which tends to happen when you’re in self-prescribed social exile. Soon, he has mastered everything there possibly is to know in the world.
He becomes obsessed with the way some things are alive and others…aren’t really. He wants to figure out how to make non-living things into living ones.
From a psychological perspective, this probably has something to do with the fact that Victor’s mother just died. This is not a healthy alternative to counseling.
Victor studies anatomy to learn about how bodies live and die.
He decides he wants to make a new race of creatures, and in his spare time he starts assembling pieces of corpses. No one mentions this, but it probably smells really bad at his place.
Further, no one seems too worried about where Victor is getting all the pieces of corpses to sew together. Are we the only curious ones?