Hi Isa,
I'm glad to see that they are trying! Yippee!
Math is just plain tough. I wonder if Decarte's cove has language settings?
Maybe they could bring the work from the higher grade down to her?
As for reading, here in the US our local library has a very extensive selection of audio works on cassette and CD. I would work on letting her listen to wonderful stories in her various languages to keep the love of reading alive. They even have some 'book and CD' packages where she can look at the pictures and words and listen at the same time. There is a small 'beep' telling her to turn the page. Perhaps she can do this at school during reading time, or at home with brother.
We also have a toy 'leap pad' that looks like a big book, but the harder words are 'activatable' with a stylus, for pronounciation, so that she can read interesting stuff more independently. Appologies, I don't know what other languages this comes in, but I would be suprised if there isn't Spanish.
For that matter, there is a pen shapped device that one can use to highlight a word and hear it aloud.
Maybe if DD does next year's math in her classroom this year, the school can plan for the year after that to have all the Math classes at once. Schools that do this often do it first thing in the morning, right after attendence is taken.
Best Wishes,
Grinity