Your best bet is to leave the scope in the shop and buy a decent pair of binoculars and let her explore the night sky and the Moon first, she will love it.
Most Scopes bought for small children end up in the cupboard never to see night again, as their interest span is very short.
About a 8/40 pair would do the job very nicely, and choose the brand you can afford, Pentax, Bushnell, Canon., no supermarket rubbish.
And as Alex mentioned never ever let her point it toward the Sun, it will cost her her sight
And if she dose not take to it you will end up vith a goos pair of Binoculars for yourselves
Leon
