Escape//mysterious story

Summary

Elena and Amanda has been bestfriends for approximataley 10 years. 7 years later, they get invited to the biggest senior party since 1998. As Elena drives through the narrow road while Amanda peacefully sleeps beside her she passes by a parked car looking exactly the same. She wakes Amanda up and stops her car at the side of the road. Elena walks up to the drivers window and sees nothing. But when Mandy aproaches the window beside her, she sees two girls laughing. Mandy suspects that this is all a dream. But it's not. Elena suddenly hears whispering forein words she's never heard before. While Mandy doesn't suspect anything. As they walk back to the car feeling confused they hear a thud. They scrunched their eybrows and quickly looked behind the creepy looking car. They saw a sign that looked pretty weird. Which wasn't their earlier. What could be happening? Why does Mandy see girls in the car and Elena doesn't?
What do you think Elena heard? Read for more:)