If she takes to it, it might eventually be worth investing in a solid silver headjoint (rather than the whole flute) - this can help achieve a lovely dark sound on slow airs and the like. If you go for a cheaper flute in the first instance, be aware that the keywork on these is often made of quite soft metal and the springs can be rather "iffy" - this doesn't seem to affect the playing but she should learn to put it in the case absolutely correctly so there's no undue pressure on the keys. Otherwise you can get the nasty surprise of dead notes the next time you take it out of the box!