Never been a math teacher, but sometimes the light just gets switched on and they start making connections. It literally just happened with my middle boy the other day. He was on a computer program answering questions and using his damn fingers to do 8 x 3 or something. Couple of minutes later, he gets 9 x 3 and goes "Hey, if 8x3 is 24, I just need 3 more, right?" It was a breakthrough kind of thing, for him, and he just took off for the rest of the session.
If it's the so-called common core kind of questions (a bad name for it) then it is just a complete different way of thinking about it. It's not a bad thing, just weird compared to how we learned. The good news is that's she'll be in middle school next year and it's much more straight forward. There's something to just good ol' drill and practice. There is a suite of good iPad apps called quick math that makes it like a game and are pretty cheap. I have mine (he's in 3rd) do them pretty regularly, and it's helping some, I think.
Is there a specific thing she is struggling with? Not that this is reassuring, but my oldest with be in 10th grade precalculus next year, and still has to stop and think on subtraction things ...
Math is weird.