At an old job, I interviewed a few hundred programmers for Windows jobs. Almost every single MSCP could recite .NET esoterica from the test, but could not write a for loop. I am not exaggerating. Eventually I started screening out MSCP's. That test is awful. Getting a MSC* cert is the weak last gasp of the failed professional programmer. It is Rock Bottom. There is nothing left after getting an MSCP, except possibly becoming a comment troll on Jeff Atwood's blog. Nothing makes me more pleased to have left Windows development than the fact that I will never have to have another awkward interview with a "certified professional."
(I am guessing this girl is legitimately bright--you can't blame a 9 year old for not knowing these ugly facts.)