If she can do one 24" you would have what most old pro barber strops were. I like that length. Personally if I were to get it I wouldn't sand it or treat it to start with. I would do the palm of the hand rub for awhile and see what happens. You can always add neatsfoot or whatever but it is hard to take away. Same with sanding. Once you break through the top grain it is gone forever. OTOH, depending on what you want that may be a good thing. I would try it as is first though. Just my 2 bits.