Higher Chemistry

Hi,

My daughter has been given her choice form for 5th year. She is taking Higher English, Maths, Physics and N5 Biology. She is not sure what to take for her other higher. She was going to be taking Higher History but she's not so sure now as wants to take chemistry but has had a poor year doing N5 due to no teacher for a while and now a poor one in comparison to the other class. Fortunately, she's not the only one with a poor year resulting in her getting 45% in her chemistry prelim. She has a tutor now but her tracking report suggested her doing Higher units over 2 years for chemistry but this is only a recommendation. Help?

She wants to do something in health so thinks History may be a waste of time but then again it might be an extra higher and easier alongside her other ones. In 6th year she could take higher Biology and higher chemistry and c/h modern studies or N5 business management