Singulair and friendships

In September of 2007 my then 13 year old daughter was put on Singular for mild asthma. At the time she was a straight A student, vice president of our school and a popular girl who's guidance counselor described as "the glue of her grade" because she was so well liked. In November she told me that she was struggling with advanced Latin and Science. She asked to drop down to on grade Latin so we did. In December her science teacher notified us that she had a C average. She told me that she thought she had ADD/ADHD and she couldn't keep up. At the same time she was having a lot of problems with friends at school and we just attributed it to being 14. 3 weeks ago we discovered that she is significantly behind in English and it was then that she told me that she is been having horrific night mares. She said that they usually involve someone killing her or her killing herself. She said that they were so graphic that she couldn't repeat it out loud. She also said that she would feel waves of anxiety that would come over her at school and she would act "witchy" to the kids in her class for no real reason. She said that sometimes when she is trying to do her homework she will read the same passage for 2 hours and still have no idea what it's about. She also said that the suicidal thoughts from her sleep happened during they day and that she had thoughts of her harming herself. Fortunately her pulminologist told us that this may be caused by singular and we immediately took her off of it which was 2 weeks ago. She has only had 1 "bad dream" not even a nightmare since. She had one anxiety attack 3 days after she was off it and she describes her moods as the "cloud lifting....slowly". Now, we have to pick up the pieces. Her grades have suffered, her friendships have suffered and most of all her self esteem is very low. I'm grateful that we found out the cause but I feel as if my daughter lost a year of her life and I worry that because Merck won't admit there are side effects we can't find out how long it remains in their system. Is anyone else concerned about the long term affect and has anyone pursued a class action suit to try to get this drug tested properly?

We made an entry regarding our then 3 1/2 year old son in Oct, then Dec of last year. It has been approximately 5 months since we removed our son from the use of singulair, after a year of use. He now stammers a bit, as opposed to severe stuttering, and his aggressive behavior is greatly diminished, though he does still have episodes, both noted in particular when he is going through or immediately following growth spurts. I begin to feel that we may never totally regain our little guy as far as his serenity is concerned, but the differences between last fall when we removed him from his medication and now are remarkable. What has totally returned is his ability to concentrate. Any excess energy is now easily channeled into dancing, jumping, wrestling, and playing music. I Thank God that in the last couple of months, he has once again expressed interests on his own accord in regards to wanting to develop friendships and enjoying the playtimes he experiences with other children.
Is there any physician that would be able to state how long singulair remains in the tissues? My concern is in regards to the occassional outbursts of anger or sudden depression. I will be seeing his doctor this month for his annual exam and will be discussing the symptoms I still observe.