In addition to the courses mentioned above, it is very important that she start volunteering in childcare/teaching environments now! I have a BA with a GPA which was the equivalent of an A. I received a scholarship to do my MA but did not get into teacher's college. As a single mother who had three jobs while going to school, I had no time to work if I wasn't getting paid for it.
Primary education is very competitive so anything she can do to increase her chances is essential.