Code names

Hayley Peterson is the typical teenage girl. With a few exceptions.
1: she lives in a secret underground headquarters.
2: the government doesn't know she exists
3: she is a common named spy.

What would it be like to not have loving caring parents who wanted you, but instead be born in an experimental tube for one sole purpose. Spying.
What would it be like to not know anyone except the other spys, most of which were decades older than you.
And what would it be like to know that every time you step outside your base, your life is under threat.
Hayley knows.
Oh she knows.

When a new recruit mysteriously signs up, Hayley is assigned to find out why. But it turns out that she's stepped into deeper territory than she thought. Will she make it out of this one alive?