I don't have my BEd but had wanted to teach. Still do. But with a BA in Soci.... I couldn't afford to take my chances on getting a teaching job after 2 years tuition of an education program (in Nova Scotia).

If I had to do it all over again, I would stick with sciences and math. French is a HUGE bonus. Even if she doesn't end up doing her BEd, these disciplines will give her more options, as far as university programs. You can do an arts degree with pretty much any background but an arts degree is not an 'in-demand' teachable.

Also, get some experience with school-aged kids. Volunteer at local schools, tutoring, etc.