What information does the nurse give to Juliet?

Nurse tells Juliet to "seek happy nights, to happy days". This could show how the Nurse cares more about Juliet because she cares more about her happiness than following in the lead of the stereotypical Elizabethan woman. You can then go on to further devolp this and posssibly say that the Nurse considers Juliet to be like her own child (which is dead at this point in time) to fill the void of her dead child and husband.