I've got one geeky daughter and one not as geeky.
Tell her to follow her interests and learn on her own. Make her geek education her own responsibility and not that of schools and universities. Tell her that the ability to learn on your own, and to learn about things that interest you, are what makes all the difference.
For geeks, that's probably the most important thing.
If she's only in 6th grade now, she likely will be following a career that will follow the mentor/protege apprenticeship and entrepreneurship model, and not the go-to-college-get-a-job model. She will have to be self driven to become an expert in her field.