Your job is to help her understand why practicing scales is a good idea (which I'm not sure it is, but that's not the point). Probably the best way is to find a

Your job is to help her understand why practicing scales is a good idea (which I'm not sure it is, but that's not the point). Probably the best way is to find a great cello player who would explain to her why it's a good idea. That's of course if she actually wants to become a cello player.