there are some fun youtube videos which are quite good for learning piano - she could learn simple tunes like twinkle twinkle and could have a lot of fun and satisfaction in doing this. my dd1 used to enjoy doing this when she first started lessons and it didn't interfere in any way with what she was being taught.
You wonderful people led me to a wonderful touch typing on-line course which my children are loving! Thank you so much! My daughter has learnt to touch-type quite fast in a week and I feel she has a talent for this. She has been wanting to learn the piano for ages but I thought she was too young - this has really opened my eyes. We are moving soon so I can't start lessons just yet for her. But does anyone know of a starting program on-line she could do until then? Many thanks!!