I.G.
Has your daughter used the tutoring center at her school? Most CC's have them and they are very successful, especially in math. It is mostly a peer tutoring model and usually tutoring is free.
One more thing I would like to mention, if she has not done so yet, she should make use of her instructor's office hours. Most instructors WANT to help their students succeed and will go out of their way for a student who shows a genuine interest in getting a handle on the subject matter. The instructor may help by showing alternative ways to get solutions, giving practice exams or additional practice problems that address specific weaknesses the student needs to work on. They may also suggest a tutor (most likely a former student).
Good luck.