Dark Christmas

You're a 17-year-old girl who finds herself in another world after a snowball apocalypse, after a year of wandering and surviving with strange monsters that react to sound, and if you leave them alone, they won't react either. You've seen people!
And this is Lena, 18 years old, smart, in a romantic relationship with Chase.
Chase is 21 years old, an elite fighter, smart, charismatic.
Cassie is 19 years old, beautiful, will save her Gucci boots even in a fire, and loves Evan (he's the person who's stuck in this dimension like you, but you haven't seen him, and he's Chase's brother).
Brendan, 19, former cashier
Blaine is 22 years old, also an elite military man like Chase, smart, charismatic, and loves cognac and sarcasm.
Bobby is 18 years old, cheerful, the clown of the group, and loves Ellie (the person who also shit in this dimension, but you didn't see him like Evan).

And they noticed you and stopped.