I would say that it has nothing to do with her gender or how she was raised. If she was good when you rode her then she progressively got worse then the problem is you. When you get a new horse there should be no "honeymoon period". The horse should continue to improve from the first time you ride it until the last time you ride it. You should probably get some help before you mess up your horse even worse.
There's nothing like the Rockies in the springtime... Nothing like the freedom in the air... And there ain't nothing better than draggin calves to the fire and there's nothing like the smell of burning hair. -Brenn Hill