Just reading this thread takes me back nearly twenty years to my own Alevels, when it became glaringly obvious there was no way I was going to med school. Alevels just weren't for me. Not that I wasn't clever enough, I just wasn't suited to the exam type.
I went with what I enjoyed. Geology as it happens. I did a four-year B.Sc. Including a years sandwich placement, and had the chance to work out what I wanted (kind of). I had the chance of a Masters, which I passed well, in addition to my 2:1. I decided to work in Local Government, and took a job in Environmental Health.
An opportunity arose to more to a more generic role and after a few years, a role in Public Health became available. I work very closely with Consultants and Nurses now. I love my work. I also have the opportunity to train as a Consultant in Public Health myself, if I so choose. Yes, the girl who realised she was never going to be 'a doctor' has another bite at the cherry now.
I didn't expect that to happen, I didn't know that things would work out that way and I certainly didn't try to influence that outcome, it just happened. I was always going to stay in science and that I have a B.Sc. Keeps doors open that a B.A. Would have closed.
There are many paths to the same destination, I would wrongly suggest your daughter looks at other related disciplines, pharmacy, pharmmacology, biomedical sciences, nursing, hell, send her over to Geology, at she'll get to do some travelling :) e everything is so black and white at 17/18 and the more interesting degrees are the ones in 'pure' subjects that you don't get the chance to experience at the lower levels.
She can easily graduate in say pharmacology with french, which gives her even more options.