J.J.
Hi L.,
Before you try to convince your family care-provider to diagnose your dd with a medical condition, please read the book 'Reviving Ophelia' by Mary Pipher http://www.amazon.com/Reviving-Ophelia-Adolescent-Ballant...
{At adolescence, says Mary Pipher, "girls become 'female impersonators' who fit their whole selves into small, crowded spaces." Many lose spark, interest, and even IQ points as a "girl-poisoning" society forces a choice between being shunned for staying true to oneself and struggling to stay within a narrow definition of female...She offers some prescriptions for changing society and helping girls resist.}
I read this when my dd was about 11 and i completely changed the way that my dh and i deal with her, speak to her, think about her and what we expect from her...we do not allow magazines with models in the house, we do not, under any circumstances watch TV anymore (and that's $$ you can use each month to spend with your kids). Daily, we invite her to critically analyze ads and billboards and messages that she does see...we no longer allow her to passively absorb negative messages from this twisted society and she is BLOOMING! She just won first place in a science expo, she started a drama group, she seeks out opportunities to assist in causes she believes in. Of course, she still whines and boo-hoos about homework and cleaning her room. She loses school papers all the time (funny that she doesn't lose a new phone # from a friend or her favorite pair of earrings! hahah) Sounds like typical teen stuff to me!
And why do you want your daughter to take NO for an answer? At 17 she deserves to have a voice and to feel like her experiences, her view points and her opinions really matter...at least invite her to help make family decisions and honestly consider them...you don't have to follow them, but telling a 17 year old flat out NO is not going to work. Imagine your boss (although i see you are SAHM--Good for you!)simply said NO when you asked for a raise, promotion, hours off work, a change of schedule. Wouldn't you feel entitled to an explanation? Wouldn't you feel as if you had not been heard and demand to be treated fairly? Treating our children like they don't matter leads them to believe that they don't matter and that their actions, dreams, desires, and ambitions are of no interests either.
Her desire to go to college is probably more of a desire to have a sanctioned place to "get out of the house" and start exploring who her authentic self is without the influence of family and life-long friends who already "know" her. College is often a time to recreate oneself...and the fact that it is school usually means very little!
I would read the book by Mary Pipher, read it with your dd's (both of them) and then follow up with Ophelia Speaks http://www.amazon.com/Ophelia-Speaks-Adolescent-Girls-Sea...
and other related books. Open up discussion and if a professional therapists is necessary, then do that as well. Most behavioral issues are about communication, consistency and feelings, not chemical disorders. And once those other issues have been addressed,if it still appears that she has a medical condition, then at least you can feel secure in knowing that you are not medicating her unnecessarily.
Good luck and hang in there! Teens are a hard part of parenting! (I have two teens right now, 19 & 13, plus a 4 year old and a baby on the way! My life is insane, but i love it anyway! hahah)