when i'm severely depressed i withdraw too so i can relate. my good friends who know my situation also listen and are so helpful. i usually talk on the phone with them cause i don't want to go out. sometimes they come over, i cry-this helps cause i'm getting out some feelings i can't tap into alone. crying releases the depression somewhat. as a distraction i watch america's funniest videos. i know this may sound silly but it causes me to laugh in spite of my depression. there is research that has proved this/laughing. it releases good" stuff" in your brain. so for a short while i don't feel so depressed. depression takes so much mental energy from us. doing all these suggestions allows your tired brain a rest.

your daughter may just be going thru natural behaviors at her age. it's good you also sought help for her.

you may have already put these suggestions into action but thought i'd post them. the exercise part i found works best if you get a good work-out rather than just walking, etc.

Lifestyle changes that can treat depression

Exercise. Regular exercise is a powerful depression fighter. Not only does it boost serotonin, endorphins, and other feel-good brain chemicals, it triggers the growth of new brain cells and connections, just like antidepressants do. Best of all, you don’t have to train for a marathon in order to reap the benefits. Even a half-hour daily walk can make a big difference. For maximum results, aim for 30 to 60 minutes of activity on most days.
Nutrition. Eating well is important for both your physical and mental health. Eating small, well-balanced meals throughout the day will help you keep your energy up and minimize mood swings. While you may be drawn to sugary foods for the quick boost they provide, complex carbohydrates are a better choice. They'll get you going without the all-too-soon sugar crash.
Sleep. Sleep has a strong effect on mood. When you don't get enough sleep, your depression symptoms will be worse. Sleep deprivation exacerbates irritability, moodiness, sadness, and fatigue. Make sure you're getting enough sleep each night. Very few people do well on less than 7 hours a night. Aim for somewhere between 7 to 9 hours each night.
Social Support. Strong social networks reduce isolation, a key risk factor for depression. Keep in regular contact with friends and family, or consider joining a class or group. Volunteering is a wonderful way to get social support and help others while also helping yourself.
Stress Reduction. Make changes in your life to help manage and reduce stress. Too much stress exacerbates depression and puts you at risk for future depression.
http://helpguide.org/mental/treatment_strategies_depression.htm
welcome to pc.. i'm glad you found us. lots of support here.