Where are all the books by and about homeschoolers? Great question! HomeschoolLiterature.com is a super place to investigate. They offer book reviews by and about homeschoolers. They also offer resources you can use with your child.
You might want to begin building a library full of books by and about homeschoolers. You might even find books that tell how a homeschooler wrote their own book. I hope that it will encourage your child to write. I know my daughter did not really enjoy writing until I told her a homeschooled kid was the author of one of her favorite books, Eargon. That was all it took for her. She was suddenly determined she could write a book too. She has started and stopped several times. I am thrilled she tries. Right now, she keeps busy writing anime stories because she LOVES anime!