A sign outside the Reform synagogue says that the rabbi's name is Gerry, so there's no expectation that the synagogue will turn out to have a female rabbi. However, for Leah's mother, a glance at the synagogue's sign is enough to reveal that the rabbi is a woman.
Georgetown is in Washington, D.C., not a separate city.
There is no Cambridge Street in Georgetown. And there is no Reform temple in Georgetown. In fact, there is no Reform congregation called "Temple Torah" anywhere in the Greater Washington area. Ironically, the only synagogue in Georgetown is Orthodox. Leah would have loved it. In addition, there is no Metro (subway) stop in Georgetown so Leah could not have taken the Metro to the Dupont Circle station. She would have walked it.