I have a mental block regarding tutoring for this. To me, a tutor is something you get when you have an LD (DD does not) or when you are not able to keep up with work at grade level (not the case). You might also get one if the teacher is very bad (not the case--I think she's good, but stuck with this curriculum). It seems tigermom-ish to get a tutor to stay on track in an advanced class you could opt out of, no? Hothouse-y. Do people here really get tutors for their non-LD kids?
FWIW, our DYS son needed extra help to fully understand a few math concepts he missed (my guess is he was distracted by something and didn't listen, but maybe he didn't understand due to how it was explained the first time). He spent a few weeks after school with the math teacher and voila, no more problems in that area. So, not technically a tutor, but extra help 1:1. No LDs.
I would reframe it as what we are suggesting is far from full-time tutoring and instead, is about giving her tools to fully understand a concept or techniques that didn't "catch" the first time.
I really wish someone had caught on that I didn't understand some algebraic techniques and instead kept just going along with the classes (I was too proud to say anything until I nearly failed a college algebra class). A few days or weeks of 1:1 help would have completely changed things in regard to math for me.