Here are the first three volumes in the Missy the Werecat Series.

Missy the Werecat: Volume I
When puberty brings on her first shift, Missy goes into the mountains for two years until she finally learns to change back. She can change from fully human in one instant to a mountain lion in the next. Everyone assumes her two year disappearance was because she'd been kidnapped by a sexual predator that she managed to kill. She keeps her werecat nature a secret.

There is no pack, no pride of other werecats, and no alpha. She's a girl with fantastic abilities growing up and learning to do great things in today's world, amongst humans. She only has her instincts to guide her, and those drive her to train herself to extremes. She must control those instincts—dampening the wild predator is often necessary. Her raging hormones and enhanced senses require very strong controls, but she explores what happens when those controls are relaxed.

Missy Goes to West Point: Volume II
The US Government's Paranormal Branch has learned Missy's secret and followed most of her activities. They have her FBI friend join their team, telling him that other supernaturals also exist, but Missy is the only female werecat. They want Missy to go on to West Point, where "being a vigilante is not what we want for this girl."

But what had started out as her simply trying to help protect another teenage girl eventually led to her being targeted by both the East Boston and New York criminal organizations. With some help from her FBI friend, she copes with crime bosses while finishing high school and starting out at West Point. She also gets some help from her new friends at West Point, but makes some enemies there as well.

Even with all this help and her enhanced senses, Missy sure has her work cut out for her!

Missy's First Mission: Volume III
The US Government has avoided using supernaturals in the past, concerned that public knowledge of their existence will pose greater risks than any benefits. But after Missy agrees to help her Paranormal Branch buddies and one thing leads to another, the question then becomes whether Missy can somehow provide assistance during an international crisis without the world learning about her supernatural powers and abilities.

Meanwhile, when Missy interferes with the sexual harassment at West Point by going around and putting everyone there on notice, she becomes the target. Controlling herself—doing things in plain sight which almost look humanly possible—that just might be her greatest ability.