While it's easy to sit back and judge Britany, I wonder how many of us would have been screwed up if we had grown up as she did, then was exposed to constant media attention. Imagine not being able to ever go out in public without twenty photographers swarming around you. Ever freaking moment outside of your home invaded by cameras, photographers hindering your every step. Not something I envy.
That on top of not having anything close to a normal childhood, or chance to find your way or develop any concept of normal life. Everyone wanting something from you, being told where to go and what to do. If someone experienced all that and came out normal, it would be a miracle.
But, that being said, she is out of control, probably with mental issues that need years of therapy, and is not capable of taking care of children safely and properly. She should not have custody, and supervised visit sadly are all she should be allowed after she cleans up and gets help.