I feel so guilty like it's all my fault.....
Is this **** hereditry?
		
		
	 
Just love her and give her as much attention as you can - and encourage her to do things she enjoys.
That's as much as any parent can do for their child and as much as you'd like your child to have a perfect life with no bumps along the road; they happen.
You just have to assure her that you'll be there for her and that will make her life much easier.
As a child of two parents with mental health issues, I'd just like to say that I love and appreciate my parents so much and I'd feel guilty if they felt bad about the person I've grown to be. They did the best they could and I may not be perfect but I'd like to become a child they can be proud of.
As for the bra issue... I believe I got my first at 9 years old as well.
Well-- a training one, anyway. 
Made me feel really grown up; like a young lady!
I am feeling upset about many things. Emotional. Distressed.