S.G.
I bought a computer game for Algebra that my son loved to play. He learned a lot by it and by the time he was in Algebra he was tutoring the kids in his class after he finished his work. Algebra is one of those things that you don't get until you get it then you do well with it. I would see if there is something like the computer game or tutoring that you can do over summer and then decide which to put her in.