I have a friend with no confidence in herself!

She's very young, only about ten years old, but yet she's very mature and silly. She's one of those people who just laugh it off, pretend she's happy. She's the most odd person that I have ever met in my life. She's crazy. She is weird, honestly, but yet I'd take a day with her over meeting my idol! She's fun! But this girl just doesn't like herself. She think's she's ugly and stupid.
She has a large nose, and has freckles splashed across her face. Her hair is like a light brown used mop. It's like her face was made just to smile!
She hates her nose, I think.
She has a deep voice, and she think's it's terrible. She's ashamed of it! I'm trying to teach her to sing now, to give her something to admire about herself that even a blind person could see, but still...Of course, she's hardly making much progress since she thinks that she can't. She thinks she can't, so she won't.
I keep telling her how awesome she is, trying to get a serious "I know!" out of her, but she always deny's it. I'm honestly starting to get very worried, and I don't know what to do! I don't know if teaching her to sing is the right thing to do or the wrong. Telling her the truth doesn't work. I've been doing that for the entire year that I've known her for!

She's honestly the most me person I've ever met. She's like me, from the inside. She does everything I'm too scared to do, and I do everything she's too scared to do. It's actually kinda funny. But anyways, I'm terrified for her because I know that this self-hate could rapidly grow as she gets older. It would've happened to me if I hadn't slapped myself and told myself that I'm totally fabulous. Of course, this could simply be a phase, but a lot of the time it isn't...Does anyone know any way I could help her?

You have a tough thing here. When negative thoughts take over the brain it can be hard to overpower it with good thoughts. Your friend needs to find something that she feels confident about and use that good energy to slowly build up her confidence. By telling her multiple times that she is awesome will not help her at all. People don't listen but if she can find something that she is good at and she knows that other people (not just you) know that she is good at it then she can start to appreciate herself.

Hope this helps