Before I say anything else, I want to say that I’m so proud of you for wanting to tell your mom. Telling people is one of the first steps to recovery. Your mom loves you, she doesn’t want to see you hurt yourself. So she’ll do anything but punish you. Since she’s been suicidal before, she might even more understanding than most parents. Sit her down, tell her you need to talk to her about something serious. Tell her how you feel, and then tell her you’ve been self harming. Tell her you’re telling her this because you realize you need help. I wish you the best of luck. Stay strong, okay? We all believe in you.