When Mischief first came to the house, Murder and Mayhem were somewhat less than welcoming. They didn't want her here and made that sentiment clear. Just the other day, Mayhem and Mischief were doing one of those things that cats do -- wrestling:
And chewing on each other:
Obviously, these are things cats do when they like each other. Who among us does not chew on his or her friends? Yeah, that's cats for you. In any event, it would appear that Mischief is fully welcome into the Wolves cat household.