Eventually she kept begging long enough that I figured out how she could knit. I started by casting on a row of stitches for her. I figured it was easier to just show her how to do the knitting and then tackling casting on later. I actually still do the casting on part for her -- it just makes life easier for all of us. (If you don't already know how to cast on, you can google a list of free videos. That's what I did when I was starting out several years ago.)
I took pictures showing me working in the middle of the row. It's the same technique even if you're working the first or last stitch in a row.
Putting the right needle into the correct stitch on the left needle. We're working the yellow stitch in this case.
After many, many stitches and most of an afternoon, she ends up with something like this:
She says it's going to be a baby blanket for her speech therapist's new baby. We'll see. I am reminded often that craft projects for elementary children are about the process and not the finished project. She will happily knit on something for a day or two and then happily rip it all out so that she can start again.