It sounds like what your daughter is going through is typical behavior for a teenage girl. Dealing with school and social expectations can be stressful. Friends often change and emotions usually dictate their behaviors. Their up and down moods can seem like you are both on a roller coaster ride. This can be a challenging time as a parent. You're doing a great job of encouraging your daughter to do well in school. You're right that she needs to want to do well on her own, but there are things you can do to encourage her. Besides verbal praise, consider starting an incentive program with your daughter. Decide what motivates her, such as going out for ice cream, getting to pick her favorite meal for dinner, having special alone time with you, getting to pick a movie rental, getting extra time on the computer, or being able to buy a few extra songs on itunes. Then tell her that for every day she comes home from school with a positive report, she gets a point. When she earns 5 points she gets to pick from a list of rewards.
 
You mentioned that you have gotten outside help to help your daughter get organized and to check for any possible learning disabilities. It's an excellent idea to rule out anything that may be out of her control. You're doing the right thing by trying to give her skills and encouragement to empower her to change her behavior. If you find that the only problem is her not being motivated, you may need to set deadlines for her completing her homework and then follow through with consequences when she doesn't adhere to those deadlines. Consequences may include taking away cell phone privileges, limiting time with friends, and not allowing time to watch television. Include your daughter in the process of deciding on rewards and consequences for her behaviors. If she's involved in the decision making, she's more likely to own her behaviors, and want to succeed.
 
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