Who was the uninvited person in the movie the uninvited?

Answer 1

Turns out the older sister was actually dead and Anna was crazy.Anna killed th step mom while the step mom was putting her in the bed.THe older sister died from a fire. Anna was going to throw gasoline on her dad and the step mom in anger because the dad was cheating on her mom.The older sister was trying to convince Anna to go to a party with her, but Anna threw the bucket down in the older sister's cabin. While the older sister came out, the lit lantern in the cabin fell on the gasoline. The older sister went back into her cabin and the cabin exploded into flames. It was Anna who killed her boyfriend by pushing him off the cliff where they'd meet and letting go of his hand when he was hanging off of the cliff. The dad wouldn't believe Anna because it wasn't true. The killer who Anna and the older sister looked up on the computer was a different woman. Anna was taken away to a mental facility, where she met the killer on the internet.