Problem: Kayla hated short nails, so when Erin trimmed hers too short at the salon,

My choice: Kayla got angry.

Problem: It was stinking in Elena's room after Betty left, thanks to the dead fish

My choice: Betty secretly put under the sink.

Problem: The pool cue used by Emily at the billiards hall was covered with more chalk than the one used by Betty; consequently,

My choice: Betty was practically incompetent when breaking.

Problem: Erin chopped the garlic while Rachel cooked the sauce, because

My choice:
Rachel was a better cook.