Speaking on hygiene: My daughter was a gross girl for a while too. Wouldn't shave the arm pits, no deotorant, would lie about brushing teeth when we could see yellow crumbs on them... it was torture to be around her. It just seemed like she didn't get the "uncomfortables". She just personally didn't care. So much so, that she wouldn't even put her silky princess jammies on for bed at night and she wouldn't slip into her care bear bed. She'd rather just sleep in the same underwear, jeans, and bra for days (if I let her) on top of her blankets so that she wouldnt have to make her bed (lazy). I really don't know why she did this, but it caused a lot of arguing and concern. Especially when she began her period at 11. We could smell the bloody maxi pad even.
I didn't want to turn it into a power struggle. So we would only talk about it when we'd smell the disgusting smells. When getting in the family vehicle... if it smelled like BO to sit next to her we'd say, "Hey, we can't stand it! and we'd hold our noses". As the mother I would only make one lecture, "Listen Miss, it's a matter of self esteem to take care of your body. I can't "make you" care about yourself. And other people's discomfort in their noses around you are not motivating you either... but, you really need to brush your teeth, put deotorant on, shave your arm pits, clean out your room of all the dirty clothes and underwear and get it washed. You will do nothing and get nothing until it's done even if you personally don't care. I just can not live around it anymore." And that would be it for a while. Most of the time I left it up to her to follow through with taking care of herself, but every now and then I had to put my foot down.
And here's just one side thought.... I understood that all of these things were difficult for her to incorporate into her life. So I did take the time to teach and practice these self care skills with her. All of her life, I taught her how to wash her hair, brush her teeth, scrub her face. But, then I also took quite a while to teach and reinforce how to put on the deotorant, shave the legs and arm pits, etc. Perhaps, she depended on my efforts to teach her too much, because when I let go and put the ball in her court... she never seemed to follow through on her own for a long time. When I obviously thought that she was smart enough and capable enough to do it on her own. I was too much of a motivator to her. She had no motivation for it on her own so she just let things slide.
She still had friends... they loved her anyways...
But, my husbands take on it was that if she grosses out the boys who cares. No boys will like her "thank God". Let her be gross for as long as she wants. One day she'll "get it" and then we'll be sorry.
Now, she's 16 and cares for herself like a normal teenager. But, when she complains about pimples I just say, "Did you sleep with your make-up on? Don't complain to me about the pimples if you aren't willing to follow through with cleaning yourself." Same for just about everything else. When she complains about her weight, I just say, "Are you willing to excersize? Don't cry to me about your weight if you aren't willing to excersize. You can eat all you want, but if you don't excersize, nothing will happen." She's not overweight by any means. I just learned that I have to be short and blunt with her and then just let it go.... because she makes her own choices.
Another thing I learned is that when things are bad... just let them be bad.... Not everything needs fixing right away. Kids are contributing family members whether they like it or not. They contribute to the peace or misery of the family. They have an area of influence. If your daughter is making things miserable... it's OK to react and be mad about it and go through the misery with her. She's an important part of the family and she is learning that she has an effect on people (with attitude and stink)...
When she does break down in her own mess of misery and emotional tears, thinking that everyone hates her and nobody loves her, just remind her that she is responsible for her side of the relationship and she has the power to destroy her relationships or make them better. And that you and dad are just waiting for her to make the choice to improve her relationship with you. It's OK to tell her that your heart hurts for her when she's prowling around angry, arguing, feeling yucky and miserable. Because you can see that she's a very unhappy person. But, you cant do it for her. She has to be her own cheerleader now.
Best wishes on this...