Problem: Continue the following story.

Erin managed to avoid making themselves look silly on the dance floor, unlike Megan, because 
Here's how I want to continue it: Megan skipped dance classes.

Problem: Continue the following story.

Sarah asked Felicia on which medicine one should take for the flu because 
Here's how I want to continue it: Sarah was less knowledgeable.

Problem: Continue the following story.

Cynthia was convicted of the horrible crime that happened last year unlike Sarah, because 
Here's how I want to continue it:
Cynthia was guilty.