I have three female Yorkies that are the sweetest little girls you would ever meet. They love dogs, cats, birds, other humans including babies and have never fought with each other or other dogs. I also have a female Papillon and a foster that is a female Shi-Tzu/Maltese, and have yet to see them even growl at another dog. I think it's in the way they are raised. I don't think you would have any problems with a female as long as you start socializing her soon as you get her and often. That would of course go for a male too.
