Dear Welcome to HCM We understand your concerns I went through your details. I can understand. The symptoms of depression are not necessarily manifest openly. Your child is approaching adolescent and she, I think, is cleverly disguising. Yes. Depression is up to one extent disguisable during adolescent period. Suicidal ideation is to be treated with the help of medicines as well as psychotherapy. The counseling team or person will be able to provide more insight into the whole episode. Your duty is to talk to your child and try to know more about her behavior. Do not be upset, angry or irritated. If you show these emotions, your child will not be open. Be patient and talk to her. Not with the intention to know what happened, but with the intention of understanding and helping the child. You should know she is in trouble and you are the right person to walk her out of it. You may take the help of the counselor or a psychologist to get the guidelines. Please do not worry. Every mental disorders are curable. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute detail possible. Hope this answers your query. Further clarifications are welcome. Good luck. Take care.