Nurse – “…I am so vexed that every part about me quivers.”
This quote might be referring to how she is worried and that is makes her anxious. She doesn’t know if this love is going to last, let alone how the two rivalling families are going react when they find out there children have married each other.
In the book the Nurse thinks that Mercutio is hitting on her, making her uncomfortable. The marriage would also be a big part of making her worried, so both of them together would really make her worried and make her quiver.
I found this quote interesting because there is many ways you can interpret it depending on how you read it, if you read it by itself or if you read it with the whole passage it changes what it means. It also depends on how much of the script you use to understand it.