What's the Name of That Book??? discussion

So I really want to find this book again and read it, but I don't remember much about it. It's about four kids (two girls and two boys) that each have a special power. The most I remember is that one girl, when she braided (or knitted I think) could create light. The book started as that girl was locked in a small room to be protected from someone, and she was there for a long time. That's where she used her powers to create light, I think, for the first time.

Sandry's Book -- first in the Circle of Magic series. I loved that series, really ought to reread the books.

Oh my god, it's a series? I thought it was just that one book. This is amazing! Thank you

You're welcome!