It all depends on the school. Some schools allow for grade replacement and those D's and F's disappear. But other schools average the grades. You'd need to contact each of the schools she has applied to know what their policy is.
Not trying to come off as a Monday morning quarterback, but that is why it is so important to try to avoid the D's and F's. If you think you're headed for a D, it's better to withdraw and retake the class than have it impact your gpa. That said, many applicants have successfully overcome low gpa's. If it's just a couple of D's/F's and the retake is an A, the end result is like having a couple of C's on your transcript which is not the end of the world. It might take more than one application cycle and expanding your school search. Best of luck to your daughter!