It sort of depends what the laws of Verona were. Under modern laws she might be prosecuted for counselling bigamy, but not necessarily under the laws they had whenever the play took place (and that is none too clear).
the interview was very straight forward. romeo told Juliet's nurse that he wants to marry Juliet and he told he that if Juliet really loved him she would agree to it.
Yes, the nurse did have a friendship with Juliet as she knew everything about Romeo and Juliet. And she would tell Juliet when her mom is coming when Juliet was doing something she wasn't supposed to do. So yes the nurse was friends with Juliet.
The nurse tells Juliet to "get on with her life" so -to-say. The nurse recommended that Juliet get married to Paris since Romeo had been banished from Verona, and that Juliet would never see him again, so she should move on and forget about him. Juliet's opinion of the nurse changed because she thought that the nurse was on her side, and wanted Juliet to be with romeo, so she felt somewhat "betrayed" when the nurse said this. By saying that it is alright to marry Paris, the nurse is saying that Juliet is not really married to Romeo, that their wedding was a sham and their wedding night a roll in the hay. To Juliet, who considers herself to be Romeo's wife, this is an outrage.
Juliet is asking the nurse about Romeo. She asks about him last because she wants to make sure she doesn't give away her feelings too soon, in case the nurse disapproves or betrays her trust. Juliet is being cautious because her love for Romeo is a secret.
She would take the ring she told the Nurse to give to Romeo
That would be the nurse (Juliet's nurse). Juliet asks her to identify several guests to mask her genuine curiosity about only one. She feels betrayed. Romeo asks the nurse who Juliet is when she is near him on his way out and she tells him his love is the daughter of Great Capulet. He, too, feels betrayed.
It is Juliet's nurse who interrupts Juliet's and Romeo's conversation on the balcony. She calls Juliet back inside, urging her to come back to her room.
But she does, just not onstage. The nurse would not be able to take her message to Romeo in Act II Scene 4, nor have any reason to warn Romeo not to lead Juliet into a "fool's paradise" or "deal double" with her if she didn't know how Juliet cared for Romeo. Nor would she tease Juliet in Scene 5 by withholding Romeo's plan to marry her if she didn't know how desperately Juliet was waiting to hear just this news.
The nurse says to Romeo: "if you should deal double with her, truly it were an ill thing to be offered to any gentlewoman and very weak dealing." The nurse would like to warn Romeo against trifling with Juliet but she has some difficulty visualizing what the adverse consequences for Romeo might be. The warning therefore falls rather flat.
Friar Lawrence, a monk, who married them in secret and later provided Juliet with a sleeping potion.
In Act II Scene 5, the nurse is returning from her meeting with Romeo the morning after the balcony scene. At this meeting she was to discuss with Romeo the question of a wedding for Romeo and Juliet. Juliet is anxious; what a guy might think and say in the dark of the night under the influence of the moonlight might look different in the cold light of day. "At lovers' perjuries, they say, Jove laughs." She wants to know what the nurse has found out. The nurse is two and one half hours late. When she does show up, she talks about everything and anything except what Romeo has said to her. She says her bones ache, she says she is out of breath, she asks if Juliet has had something to eat, she asks where Mrs. Capulet is. And when Juliet starts to lose it from the frustration, the nurse says huffily that if Juliet is going to be that way she can run her own errands! It's a great scene and very funny if played well.
Well the nurse would help them communicate for them by going from one to another and helping them make choices