Oblivious

Asteria Nyx is 17, she's going into her junior year of high school.
Her older brother is going to be a senior in high school, along with his best friend since they were 4.

When her family leaves for their annual summer vacation to their second home in Montana, her brothers best friend just so happens to tag along this year.
That was just the start of how different this vacation would be, and how much would change by the end of the summer.
Would Asteria finally find out the thing she'd been too blind to see all these years? Or will she remain oblivious?