Im trying to find this anime?

well its about this girl that has to go on a trip with here parents as she arrives at this place there's no one there but as it goes on she explores the place but in a flash she seeing these so called spirits she get scared and run to her parents but the start turning into a pig she freaks out runs away and hides later a young almost looking kid find her and try to help her go back to the reality world that she was in