Not sure when your open days for the Unis are but go to them and talk to the nursing area. they will be able to point her in the right direction. You can ring the Unis and talk to someone. Also her careers advisor should be able to help.
Does she know a exstudent from her school who is doing nursing that she could talk to?
A friend of DD2 is doing nursing and didn't do biology and had a really hard time when she had to do the subject at Uni.