Chance encounter

I swear, when the semester is over, I will use my own prompts. This one was the very devil.

Think of a chance encounter that could leave you shaken, stirred, or in deep trouble.

Molly banged the door to the toilet stall and swiftly began to relieve herself. Seeing a familiar pair of beat-up Uggs to her right, she called out , “Becca?”
“Yeah, What’s up.”
“I had such a night! I am so not ready for this test.”
“Me neither,” Becca agreed. “God, I hate theory.”
“I hate theory, I hate this class, and I hate HER.”

Becca’s toilet flushed, and then Molly’s, and she grabbed her backpack and swung the door open.

To see the professor rinsing her hands at the sink. Smiling.