She will do that to any cat that comes into her territory male or female. It's just the matter of introducing them slowly and she will accept. I have 2 girls that love each other to death I also had a female that didn't like any other cats at all. She had babies herself before I realized the importance of spaying. Her babies all found good home but one lady was moving and could not take the male kitty with her. We took him back and she hated him and never liked him much and we had him for years. She only accepted him being around and she picked on him every chance she got. So I really don't think it matters if you get a male or female kitty.