I don't know your therapist but If she reacts like my present one she will not be disappointed or worried. Reading this thread will show her you are acting responsibly and taking care of yourself in a great and healthy way. Sometimes therapists don't write everything down in the files. Cutting can fall into many broader diagnosis type areas. such as PTSD (intrusive thoughts and actions). most therapy agencies in the US now keep their files very broad and very discrete because of courts being able to get access to therapy files. Talk to your therapist maybe her/his office follows such broad file protocals. And yes a person can do this on their own. 98% of my therapy is solo work. take care. heres luck to us both at holding our 3's have a great day.