Board Thread:Episode Discussions/@comment-1181222-20180913151539/@comment-1512913-20180915154716

Still a poor choice. As shown, Karin can easily slip through anytime. She can hide her chakra signature to become untraceable by other sensors, seems quite incompetent of Naruto and others to leave her be there.

But she probably still has a thing for Sasuke, so perhaps if Orochimaru were to mean something bad for Konoha, she would inform them. Perhaps there is more going on than we realize and Jugo, Karin and Suigetsu are loyal to Konoha, or Sasuke rather and just play along their allegiance to Orochimaru. Kinda makes sense, considering how obsessed she was with him and the same for Jugo, with his 'Sasuke's will shall be done' talk all the time.