She keeps the beat, so she a 10/10 as far as drummers go.
Ummm,no...that would make her maybe a 2 out of 10 ( only ahead of drummers who can't keep a beat).
Drummers should probably be offended by your remark.By your logic, even the best drummers are less than a drum machine, which eliminates any chance of human error whatsoever.
I'm guessing you don't play in a band or watch much live music.