The violin teacher at my children's school recomends a half size fiddle for 7-10 year olds. Maddie started at four on a quarter size and she was always tall. She went onto a half at 7 and a 3/4 at 9 and only got her first full size one last year just before she was 12. Shame you're not in UK or you could have had our smaller one on loan. BTW Maddies last violin was bought on ebay for around £50 and plays very nicely.