How do I deal with this?

I'll admit that I'm desperate for help.

There's this girl in a class I teach. I suspect that she's dyslexic. Sometimes I observe her doing her own work. What I saw: she was doing her geography homework - and she was copying the textbook. Word by word. Everytime I gave these girls some individual work, I noticed her friends are actually the ones doing the writing for her.

It calls for an investigation. I asked her friends about her, but I still haven't asked the teachers. I found out she had trouble reading. She had trouble distinguishing sounds and making sense of spellings. Dyslexic? There is a probability that may be so.

I found out even more beyond her impaired ability to read. It was test week during my first arrival at school. I was assigned to invigilate the Maths and Science test for this particular class. As I was doing my rounds, I noticed her arms. They were riddled with scars. There were some short and thick ones. But most were long thin lines criss-crossing her arms. A friend of hers told me that she had family problems. I was also informed that earlier this year she cut herself on her arms; she explains the reason for the long thin scars which caresses along her arms like a slithering snake making its way up a fair and smooth branch.

She didn't seem depressed. She was smiling a lot. She participated (and interrupted) during my teaching session. Well, she's quiet most of the time. Somehow, the more I look at her the more I saw. In her eyes I saw a quiet struggle. A struggle she took her sweet time fighting. She pushed forward but did not pushed hard. It felt like there's something big on top her - trying to crush her - but she's only holding it off where it only stops inches away from crushing her into singularity.

I have little experience with these kind of troubles. I live a normal happy life; to tell them I can help them would be a tad too difficult. I was also informed that she went in and out of counseling.

What do I do? How do I deal with this?