I was a Chemistry major eons ago (UW-Madison) and know how many lab hours (for how few credits) there will be. Not to worry. Labs are fun. She should go ahead and take what her engineering advisor suggests. She can handle the coursework required. She can add a music class initially and if it becomes too much she can always drop it. However, that extra class may be her stress reliever- an opportunity to do something totally different. Pushing limits is so much better than not trying and discovering later what could have been done. Good luck to her. My kind of person. Easier for women in science now than back in the day, although my honors gen chem prof’s wife was a prof and he was liberal minded.