Silence is a Killer

This is a rewrite of another book ive written, i believe it is still up on my profile.

A young woman moves into a forest ridden town, to attend the local college. She has moved from her foster parents house, to a small secluded cabin, where she lives with her little sister in peace.
One night while attending a concert, masked men open fire on people, and she and her litte sister run for their lives. A man rescues her and her little sister, brings them to a hospital, but never tells her of his name.
The following weeks, she attends school, and sees him everywhere around school. They both have a dark secret that they want kept from each other, but when danger arises, will their secrets be revealed?