孩子也很痛苦，她还在苦苦挣扎，真心请教作为家长能做什么？

Let her configure it out. She will be fine at the end!

Parents: support her emotionally, 0 critical, 0 expectation, 0 what if or 0 but. If she does not want to drop the class, find a good tutor for her. If she wants to switch to a easier class, agree with her.