What is the question to this because I only see a answer.
Well, when its in first person you get more of an insight on how they really feel and think while when its in third person you have to rely on a guess and not a fact. So it limits the readers knowledge on the thoughts and feelings of the main character. Hope this helps :)
Answer:
She supported it because she wanted juliet to follow her heart as the nurse practically raised juliet.
They would not have as both characters allow communication between the the two that otherwise would not be possible.
Yes, because they want them to follow their hearts and not be forced to marry someone they don't love.
Explanation: hope this helps