Polyester Power Suit / The Droll Troll

A) Ever since Mona's dad got a part-time job and bought that horrible polyester suit he's been acting strange. Mona has to stop whatever is causing her dad to act that way. But what can she do if her opponent is invincible? B) A creature is hiding and breaking objects at Mona's house. But what kind of creature? A racoon? Nah! That would be too obvious and so not Mona... Perhaps a troll...