My daughter have in recent times turned 13, she have told me that her breats are leak fluid, she have not have sex
Answers: I don't know what that could be. Some women leak when they hold a burning desire to have a child, but that is probably not your daughter's grip. Take her to the doctor. Assure her there is nothing to be disconcerted or afraid of..
This link is informative and helpful: http://www.mayoclinic.com/health/nipple-...
From reading it, most plausible nothing is wrong with your daughter and that sometimes these things take place with women. .
It could be hormones or puberty. I would take her to the doctor to product sure everything is working properly.