It’s hard for me to see how you pay more for one of the options that isn’t Yale unless you are (1) hoping to play SEC sports or (2) planning to do engineering at Berkeley. Even that one is a close call.
I’m usually pretty sympathetic to students who feel at home in a different environment (see the Rice vs. Stanford thread), but if you got into Yale and you want to be a linguist, you’re probably just as nerdy as they are, if you can admit it. Tell her to rush a sorority at Yale, and she’ll find the other Vandy types.