there is a book you can get used on amazon for 1.29 called the scarred soul by tracy alderman. it is a simple nonthreatening workbook for dealing with self inflicted violence. a chapter that ends with questions that you journal to help understand why you are doing what you are doing. it never asks you to stop until nearly the end of the book and that is what i liked about it because cutting was comforting to me. i quit doing the work at that chapter becuase i wasnt ready to commit but i didnt cut again for five years. there is a chapter for helping parents understand why as well. reading the book could help you understand your daughter better and maybe help her. if you want to talk, feel free to pm me.