Revealing mistake: In the scene after the fire, when Kyle is playing with a candle, as he picks up the candle his belly button is visible. It has been established that Kyle has no belly button, therefore this is a mistake.
Continuity mistake: In the bathroom scene, Andy's hat keeps changing position between shots. Her hat position interchanges between showing all of her forehead to none of it.
Answer: Jessi is jealous of how close Amanda is to Kyle. Kyle and Jessi have a psychic link and Jessi feels no one should be closer to Kyle than she is.
Grumpy Scot