Should I tell my teacher?

So today I gave my favorite teacher an end of the year gift. It was a book with a bunch of quotes and sayings that I wrote for her. She wanted to read it later so I am going to see her tomorrow. What I am wondering is should I tell her that I had contemplated suicide, but then always decided against it because of what she taught me? I had been in a big fight with my friend and I felt absolutely hopeless. I'd never felt like there was no hope until I had this big fight, and no one to talk to. (Yes I had my parents but I didn't have my friends and that was really hard.) Well the fight lasted about two weeks and I know that doesn't sound long, but try going two weeks without your closest friends, it's the hardest thing in the world. Well during that period of 2weeks I really thought about killing myself, but always decided not to because my teacher taught me that everything gets better. (My parents always said that too but she really made me understand that everything does.) Well anyway, no one knows that I ever even thought about it, especially since I didn't show it, because I'm the kind of person who hides her problems and always seems so on top of things. That's why it'd be very surprising that I ever thought of it, even I am surprised. Anyway, I'm definatley over these thoughts now, because the fight is over and our friendship became even stronger because of the fight. But I always wonder if my teacher hadn't made me understand that, if I wouldve attemted to well, you know. And since tomorrow is the last day of classes, I'm debating about telling her, because she has no idea about it at all. But should I? I mean should I just forget it and not tell anyone? Because I don't want her telling anyone, because I am completely over it now! I mean I'd never do it now. I wouldn't even think about it now, I want to make that clear! But if I tell her I don't want her to tell my parents or anyone, and I know she may feel obligated to. So should I tell her? And if so how? What should I do?