Yup I've heard of 'em. It doesn't look very hard at all to crochet without a pattern - of course, I am very....creative...and LOVE to do things without patterns. (For example, I just made a dress out of an old pair of jammies without a pattern...yes it looks fine. XD) However, I think she'd just have to crochet a triangle for the front and back (if there is a back...I can't tell.) And a rectangle with wholes two ear holes in it and connect them. (Or if she is crafty she might be able to do it without having to sew together seperate pieces.) If you want, I could make a pattern if you give me the size. But if your Mommom can figure it out...great!