Hope someone can help 
Dd has just gone up to year 7 and is struggling so much with everything.
She competes at national level in her chosen sport and currently does 21 hours training a week. 3 weeks into the new year and she's on her knees both emotionally and physically.
She's adamant she's not giving her sport up but admits she's not enjoying it as much any more. I've spoken to her coach who has said she doesn't want her to leave but equally doesn't want her to be miserable at training.
School are aware of the level of commitment with training and competing and are prepared to cut her some slack re homework etc. Trouble is dd is a high achiever academically as well and the concept of not doing homework is completely alien to her - I've found her a couple of mornings at 5am sat at the computer trying to do homework and this is after it getting to bed until 10 the night before due to training.
She's very emotional, bursting into tears at the drop of a hat but doesn't know what's wrong or how to fix it. I know hormones probably have a bit to do with it but I can't bear seeing her so unhappy.
Any ideas of where to go next? Or tips on how to make things a little less stressful for us all? Or even tales from others who've been through this and can reassure me (and her) it will get better? 