I don't see why you can't take a 5 year graduation plan. You can even go a little easy on the class load. Most liberal arts colleges require that you take a pretty solid number of general education courses, on top of every major having some sort of non-major related courses required to graduate. You can compare, find which ones are most common ground for those programs, and take those while you settle into college life and start talking with other students or professors about what directions you want to take your life.
Its a little harder on the finances, but I think people who aren't sure of what they want their future to be should take this route.
I went straight in head on into a topic I just wasn't sure of and it resulted in a pretty bad motivation crash. Being 18 years old and unknowing of the world and being forced to pick a road often times ends in disaster, hence the high drop out rate for college freshmen.
Now that I have my life sorted out things are going a little smoother.
Also, if you take advantage of summer/winter semester courses, you can grab enough credits to probably graduate in 4 (or at least, 4 and a half) years.
Helps if you have AP credits too. I had Calculus and English credits from the get go.
The thing is, some GE classes, i.e., a Life Science GE class, will not be accepted as a Major requirement if the person in question wants to major in Biology. The Major form of the class must be taken. Yes, there are some non-Major classes required as well, but each Major has a different requirement. Wasting money on a class that isn't even needed isn't very good, especially if that money comes from loans that will have to be paid back later with interest. It would be good for Humility to pick one career choice as a Major and one as a Minor, and work from there.
Humility will need to do some research as to what classes are a part of the Majors she is interested in, and instead of advising her to take a bunch of GE classes, I would recommend attending and being a part of the different Major-related clubs offered on campus. Since there are probably going to be upperclassmen there that haven taken classes needed for that Major, they can offer a lot of insight into that particular field, and better yet, what teachers to choose and help when you have trouble on homework problems and quizzes.
Summer is probably better spent interning and spending some time in the field instead of being holed up taking classes. You can afford to be a little unsure about what career you want to go into when you first enter college, but you still need a general sense of direction and do some planning, not saying that you didn't recommend that.