Problem: Continue the following story.

Rachel tried to clean the doll off for Angela so she could play with it, but 
Here's how I want to continue it: Rachel was having a hard time cleaning it.

Problem: Continue the following story.

Megan had to buy puppy training pads but not Katrina because 
Here's how I want to continue it: Katrina had an outdoor dog.

Problem: Continue the following story.

The lump was getting bigger than the bruise because the 
Here's how I want to continue it:
lump was from a bigger impact.