It's a tough call, balancing taking high school classes that you actually enjoy versus "what looks good on your application." It really depends on what college she wants to go to and the likelihood that she will get in.
At our local high school, it's very difficult to just get into our state colleges, so it would force you to take AP biology and not zoology, even though you might have more interest in zoology. Or taking AP calculus when you don't really want to.
I don't think that she'd have any trouble getting into state schools where we live or probably even UW (another one she's interested in) and she will get in both zoology and AP bio with her current plan. Physics is the one that wasn't going to fit into her current game plan, but that may have to change. I hate to have her entire transcript full of nothing but science though, too...