I actually cheat a bit. The instructions have you wrapping the yarn around each peg every time you complete a row. I don't bother with that. I just lay the yarn across the pegs similar to the way I learned to finger-knit as a kid in Girl Scouts. It works just fine. I'm thinking maybe I should try something the right way at some point so I can see what the difference in the finished product is.
Bri shouldn't have a problem. If she's anything like her mother, she's a smart cookie, and it's pretty easy to figure out how to pull the bottom strand over the top strand and over the peg. It's basically that, over and over and over, until you have something useful. Finishing can be a bit trickier.
Lisa