if my girlfriend did that. I would stand her up look her in the eyes grab her hands kiss her and say "you see these, I don't want you ever hurting anymore. I don't want you cutting anymore. I want you to be happy and I will with all my heart make you happy. I won't leave. I won't quit when you wanna leave and give up. and I sure as hell will be on your doorstep when you say you're sad or had a bad day or wanna die. I'm not letting you harm yourself or want to leave anymore. because you mean so much to this world and to me. so please give me your razors and please promise me you will try to stop." and after she says I promise. I will get down kn kne knee and kiss her arm wear her cuts are. saying "lets turn these in good memories" and then I would hold her just standing there