One last thought - remind yourself that she is in grade 2. If homework is just busy work that gets in the way of her learning at home - jettison the homework. Depending on what it is, you can tell the teacher it's been checked orally with you, or just do the last math problem, or tell them what you've replaced it with - whatever is appropriate. Figure out what is the worse that the teacher can do (and we usually fear huge repercussions that never arise), and try to get comfortable living with it. There will come an age when grades matter, compliance is non-optional and useless busywork (alas!) may have to be completed at home regardless of its lack of value. But grade 2 shouldn't be it.
