I will be brutal. Does
she like Computer science herself or is it your wish? These days, kids see & hear IT/CS people making money and then gravitate towards it (nothing wrong though but just saying) even if they have no inclination really.
In schools, I scored decent in Maths but that is partially due to my father's training efforts at home & partly due to luck and I suspect I might have mastered academics unintentionally. In my opinion, liking for maths and being good at it is very important if you want to really be good in CS. If you want to be run of the mill coder like me, sure, she will be fine but if you want to be someone like
@cguy and couple of other people here, then she would have to increase her interest in maths.