Problem: Continue the following story.

When Joel went to the gig at the bar without Lawrence, 
Here's how I want to continue it: Lawrence felt a little upset about it.

Problem: Continue the following story.

Kevin soon realized that Randy was autistic because 
Here's how I want to continue it: Kevin is very perceptive about such things.

Problem: Continue the following story.

Tanya once again failed to prepare for the trip, leaving Amy patiently waiting again. 
Here's how I want to continue it:
Amy was conscientious.