That is the whole point. You don’t have to study with her. Have her sit in the kitchen and let her do her homework, while you are doing your work. It’s not your job. She should know the material.
write a note to the teacher, saying that she did her homework by herself. Ask the the teacher if she knew the material. The school day is so long. It is still hot outside. No one is expecting them to do more than a chazara.