Only 13 years old. She would have been fourteen in another 2 weeks.
Juliet fakes her death by drinking a potion that temporarily renders her unconscious or in a death state. Romeo does not receive word that she has faked her death to be with him and he kills himself...
lord Capulet
Romeo, of course, but also Paris, the Nurse, Friar Lawrence and, in their own way, her parents.
Juliet Capulet