Sounds like my mini war that goes on each day. Miley, my female Aby, hates Gabe. He is a sport about it, but every chance Miley gets, she keeps Gabe in his PLACE. He lets her have it every now and then.

Here's what I do. Nothing, except make sure all the claws are short. They really don't get the pet thing, they just care about the pecking order in the house. Miley thinks she should be higher in order than Gabe. She is not, all things considered, and she doesn't like it. There is much to be said about awful female cats. Awful, meaning, stubborn, territorial, mean spirited. It is quite common.

My vet told me that he would take a male cat over a female any day. I never really found this to be true until getting Miley and Graemer and Gabe.

I would clip their nails and let them work it out.