Off the top of my head and based on what my friends in debate (poli sci) have applied to:
The majority of the Ivies
U Chicago
Georgetown
George Mason
George Washington
Washington U. in St. Louis
Northwestern
Georgetown would probably be your #1 goal for her, the School for Foreign Service is well known and produces some of the most talented people I know.
I’m sure there’s countless schools that should be included with those I’ve listed, by no means let this be indicative of a school’s worth; there’s pros and cons to every single one of them.