There are a couple of things about this scene that seem odd to me. Lady Capulet is not at all suspicious of Juliet's request to sleep alone even though she recently told them of how much she despised the idea of marrying Paris. I would think that the parents would want to keep an eye on her to make sure she doesn't try to run away or something like that. Also, I don't get why the nurse doesn't get a single line in this passage when she has shown herself to be a very talkative character in the past.