IMDb wrote:A 12 year old girl goes to a boarding school in France after her parents split up. Upset by this situation, and still hoping her parents will get back together, she runs away from the school to search for her father, who is a musician travelling through eastern Europe. She catches up with him in Poland, and tries to convince him to reconcile with his wife. When this does not look like it will happen, she runs away again, this time to locate her mother and try to convince her of the same thing. Along the way she has many adventures.
This is tough to find because another movie called Molly was made in 1999 starring Elizabeth Shue http://www.imdb.com/title/tt0143746/ - NOT the same film and almost the only thing that comes up on a Google or eMule search.
I don't know much more about this film than the description but it sounds like it might be a fun romp.