Erin Hunter said this quote

You have no understanding of the warrior code at all. What you've done here proves it. You've risked the lives of young kits... by leaving them alone here. Anything could have happened to them. They could have been lost. They could have died. My kits could have died. But you didn't just betray me. You betrayed the entire Clan. You did all this... and you never considered how it would make any of us feel. The Clan is a family, Sol. A community. And you're incapable of thinking about anyone but yourself.