RPI is a “fit” school, so after spending time there she should have a better idea. Definitely an Engineering powerhouse so it really depends whether she wants Engineering or not.
Engineering will be technical and specialized right from the start and RPI will offer topnotch opportunities in that field.
The downside to Engineering is that you can’t really study much outside of it because there’s so much to learn in just 4 years (though many students take 5).
Geology is actually a pretty good major professionally, especially hydrology, but it will require a Master’s degree. It does keep open the opportunity to learn more than Geology - Geography, Urban planning, agriculture-related issues, physics, environmental science, Energy-related fields, Economics, Geopolitics… Can all feed into it. Studying in the Artic may also matter. The field is definitely broader than Engineering, with a different focus.
She could always accept the W&M wait-list with a LOCI, if she loves RPI or UVM, no harm no foul. 