Goldilocks and the three mitts?

It seems that my vision is off. I worked on the bird and vine mitts for my sister and lo and behold - they are entirely too small for her to put on - good thing I am only into the first half of the first mitt. I also worked on a 2nd pair of mitts Susie's Reading Mitts - and they are entirely too big. So I am ripping both out and hoping that my new cast on will be the right fit...