In Search of Valor. Valorie Dawes Thrillers, #1

An international kidnapping ring took her friend's daughter. Now they know Val is helping her-and they'll stop at nothing to eliminate her as a threat. At a young age, Valorie Dawes vowed to avenge the death of her uncle, a policeman killed in the line of duty, by following in his footsteps. During her first month at college, the mysterious disappearance of a close friend's child drags her into the role of crimefighter much earlier than planned.
But Val's initial attempts to help lead to mistrust and recrimination. Self-doubts escalate, not only about Val's future as a cop, but over her ability to make and sustain the trust of a friend. Anxious to prove herself worthy on both counts, Val puts her own life on the line--and discovers that the kidnappers will stop at nothing to get rid of obstacles like her.