It's kind of funny to watch these two interact. It's almost as if the cat is a human sibling. Quincy loves to love on his "little sister." He also loves to tease her. When she has had enough teasing the fight is on and then he howls. "Mommmmmmmmmmmyyyyyyyyyyy! Will you please come get Moses? She is 'tacking me!" When I arrive on the scene, she usually has him backed into a corner, her ears are flat on her head, she crouches just a little as if she is about to pounce on him and her tail is swishing left to right in a most ferocious manner.
It usually just takes a quick cuddle and a slight change of scenery to tame the furry beast. And then it's back to lovey-dovey.