yes there have been reports of suicidal behaviors attributed to malaria drugs (Lariam)
nothing conclusive and probably rare, but it’s 100% if its your kid
Here are a few links
http://www.washingtonpost.com/wp-dyn/content/article/2008/10/11/AR2008101101516.html
http://news.bbc.co.uk/2/hi/uk_news/wales/2892203.stm
http://www.usatoday.com/news/science/2002-09-04-malaria_x.htm
Your daughter needs emergency evaluation right away!!
My gosh, as always, I am amazed at the breadth of knowledge shown by freepers! I would have said rush the kid to a shrink but you put your finger on it in a flash. Impressive.