Juliet waits impatiently for the Nurse to return, and maligns "old folks" as "unwieldy, slow, heavy, and pale as lead" (2.4.14–15). Finally, the Nurse arrives. At first, the Nurse pretends she's too tired to talk in order to extort a back rub from Juliet. Then she relents and tells an ecstatic Juliet to get to Friar Laurence's cell to be married.
Romeo, as a man, can go out into the world and act. Juliet, as a woman, must wait at home.