Kathleen's life in the Moon Stone Pack was marked by bullying and an inability to shift into wolf form. She never expected to fall for her alpha brother, but Dawson's cheating and rejection sent her spiraling into pain. After a fainting spell in the forest, Brady, the Alpha King, intervened and became Kathleen's new mate, his feelings for her mutual. However, their intimacy was disrupted by a mysterious mark that eventually led Brady to discover Kathleen was actually his long-lost sister.