N.D.
Talk to her math teacher (or another one at the school, like the dept. head) about it. Maybe they can do some time after school one day a week to help her clarify concepts. Sylvan, etc. are big profit-makers and if what she needs is one-on-one time with a caring teacher, that should come from the school if at all possible. And may cost you less...every girl needs a good relationship with one math teacher in her life! (No, I did not, but am eternally thankful my daughter had an awesome one in middle school)