The Master - Whisper Chronicles by Taylor Wilcoxson (epub)[BluA]

Summary:
Aquamarine was once a child like any other. However, when tragedy strikes her family’s farm, she is left on her own. The most unlikely of men becomes her surrogate father. Master, the greatest assassin in the world, now claims her as his own apprentice. Abandoning who she was, Aquamarine becomes Silence, a deadly force to be reckoned with. Follow her story as she takes on the world to save her friends, and the man she may love. You may find yourself asking the same question as Silence, “who is the Master”?