Paws of Stars Book 1 : Rising Tides
CassMutt for Sandstorm
Sandstorm is Firestar's mate and one of the most respected and talented warriors in the clan. She has plenty of experience, compassion, and a connection with various cats and groups that makes her a good voice of reason and sometimes mentor. That said, she also still has a bit of the hothead from her youth and isn't afraid of criticizing an idea or cat she doesn't agree with.
(Angry, Prodding) "They're stealing our food! Don't you fight anymore?"
(Mildly Annoyed, Protective) "Whitewing is much older than you, and frankly has done far more for the clan so far. Don't forget she could have become a warrior sooner if she weren't waiting for you."
(Wise, Warning) "Hold on a moment. We shouldn't go rushing into danger; these stones might fall and block us in."