if she isn't in to therapy now is a good time to do it. if she made and attempt then she has been thinking about it for a long time and has gotten past the fear of doing it. she needs a professional to help her through things so that this one attempt does not become her form of release. if the butter knife did not cut the skin then she may not have experienced the endorphin/rush thing that comes right after the slicing and watching the fliud run out. Im glad she is confiding in you but now that she has upped the ante so to speak if it was me I would up my side of the support and resourses ante by getting her into therapy now. before it becomes more of a problem.