“At 63, [she] has been running an art museum in New York longer than anyone except Glenn Lowry at the Museum of Modern Art. … She is one of only two directors in the city who has overseen the construction of a brand-new building. … And she is now in the midst of an $80 million capital campaign to double her museum’s size, a project notable at least so far for its sotto-voce nature, in sharp contrast to the expansion Mr. Lowry is overseeing.