The nurse
Juliet is old enough to be married
She doesn't, and she doesn't have to. She is Juliet's servant.
The Nurse tells her, after Juliet asks.
In "Romeo and Juliet," Juliet's friends are the Nurse and her servants. The Nurse is a maternal figure to Juliet and helps facilitate her relationship with Romeo.
The Nurse interupts their conversation (pretty much every conversation they have when you think about it)
She wants to figure out if Juliet is even interested in marriage.
Leila Nurse's birth name is Leila Rose Nurse.
It was both Romeo's and Juliet's idea to marry eachother.
The nurse that takes care of the babies after birth is called a postpartnum nurse.
One line that illustrates Juliet's anger at the Nurse is when she says, "Blistered be thy tongue for such a wish!" This shows Juliet's frustration with the nurse's suggestion to marry Paris and blame Romeo. She also expresses her anger through statements like, "Prodigious birth of love it is to me, that I must love a loathed enemy."
Lady Capulet is Juliets mother BUT the nurse brought Juliet up. Juliet was raised in Italy in the house of Lord and Lady Capulet, her parents. But largely by her Nurse and servant Angelica.