C., I'm the Mom of a 16 year old and I feel your pain! I keep telling myself "it's just a stage". They can become rather unlikable and self-centered at this age and you have to remember that their hormones are going crazy and their brain is literally being re-wired too. With these physical challenges (and a junk food diet teens love, especially if they're working and have cash), you really can't expect a person at that age to be very nice. Even grown up people with physical challenges get cranky. Times like PMS, menopause, etc make women act crazy too.
If it's possible at all, take a vacation with her alone and do something fun. I think this is really important to re-connect. A weekend is good, a week is better so long as you're having fun and doing stuff to keep busy, preferably out in nature which is calming, whether it's camping or the beach. Leave your problems at home unless she brings them up. It may be hard to leave your son and husband but it will be worth it.
My daughter and I have regular "dates", we go for a treat somewhere or go to the ocean and sit and talk. All of the teenagers I know will yell at their parents at times. I'm talking about "good" kids, no drugs, no sex, no drinking.
Kids these days have a tougher time than most generations. They see lots of expensive stuff, they want it, they can't have it all, jobs are scarce, gas is going up, the environment is rendering this world unlivable soon; it's scary for them. Homework is ridiculous. When I was in highschool there was a little bit of homework. These kids now are very stressed and have more homework than I had in college. Life is very hard. Please don't ever belittle her and say things like, "you wait if you want to see how tough life really is!"
16 is probably the most challenging age for a parent. Make sure she gets her driver's license as this will force some responsibility on her (expect criticism of your own driving and don't let it bug you!). If possible a part time job is great. When I was 15 my Mom sent me to a farm all summer to work. I think she thought it would be punishment but I loved it. There were some older girls there, daughter's of the farmer and we just had a blast. I'm a big believer in a change of scenery on a fairly regular basis. I'll be taking my daughter to Belize this winter for an extended stay so she can see a different way of lifestyle. While something like this may not be possible for you (or even desirable!), a few weekends of camping, riding, going to the beach can work wonders.
I really like the book, The Continuum Concept. It is "way out there" but I followed a lot of the child-raising methods in there and my daughter is very mature for her age but she still gets the temper outbursts and lack of respect now and again. It's all part of it and while this is easier said than done: Don't take it personal! Keep repeating this to yourself constantly: I will not take it personal. I will not yell back. I will not engage in an immature power struggle.
Have your rules, be sure they are reasonable and keep her safe. I know where my daughter is always. If her cell phone is off, there better be a good explanation! We live in a small town so this is possible. I know all her friends and where they live. We also homeschool which is a challenge since she's home most of the time. School is a very corrupting influence for teens and they learn from each other. Take advantage of the summer and "deprogram" her. If you can get her to a day camp like riding or other activities she may enjoy, go for it.
Your husband can also do stuff with her, without you. Sometimes the dynamic of Mom, Dad and daughter just doesn't work well unless you are a 100% solid team and know what the other is thinking.
Regarding diet, the less junk food these kids consume, the better they will feel. I have a "magic mushroom" formula that seems to give my daughter whatever amino acids and other nutrients that she needs to feel good. If there is depression there are other brain products like GABA (NOW company) that may help. A lot of teens are depressed which is why they get angry. This is more physical than emotional. They are growing fast and need lots of healthy nutrients. They get depleted very quickly and are starving for them. Many Americans are actually suffering from malnutrition and this affects the brain. If you want to write me personally or call me I can help you with this aspect since I'm a nutritionist and have studied this extensively.
Be very loving, be there but don't be a doormat either. These kids need loads and loads of unconditional love and you will hear an occasional thanks or you're the best Mom. Treasure these and remember them when she's acting up. Hope these ideas help and how about writing back some time and letting us know how you made out?
S. Hoehner
www.sharethecause.com/detoxqueen