S.E.
Ahhhh...hormones. I have an 11 year old girl (almost 12) and let me just say that I feel your pain.
All I have done is try and remember how I felt when I was that age. Remember when the hormones started building up, and your emotions were on your sleeve? Everything is so dramatic and blown out of proportion in their tween minds.
As for advice, like others have said some quality alone time, DOES go a long way. Tell her what's going on with her body and her hormones, and give her some suggestions with how to cope. Let her know that you are there to talk. She may not say much at first, but you'd be surprised at what she might ask about. I try to talk when we're in the car or shopping for something for her like clothes.
Also, let her know what is expected of her in your home, and that being hormonal isn't an excuse to be nasty to everyone. It's fine that she feels a little witchy at times, but it's not fine to take it out on the rest of the family.
Talk to her about how you felt when you were her age! Sometimes they think that we have always been "Mom" and to know that you've been in her shoes goes a long way. After a few "oh, man, I remember how THAT felt..." stories, she started opening up more and saying "Mom, did THIS ever happen to you...", etc. Also, this could be connected to friendship issues at school. Sometimes my girl will get down and snappy when her "group" of friends get into fights, or there's a particularly catty girl that's giving her trouble. We can't solve everything for them, but we can be there to listen and let them vent about what "stresses" they have.
As for your husband, if he's a SAHD with several more girls coming down the path, then he needs to get ready for this. He'll have his own ways of dealing with things, but a conversation with him about what your daughter is going through might help him understand as well. Tell him what to expect from her; mood swings, irritability, crying for no reason, etc. Don't expect him to handle everything like you do though. He's Dad, not Mom. He doesn't know how she feels and he never will. Let him be Dad, your daughter will respect him for that.
I hope things get better! But, I have a feeling this is just the beginning!