I am doing a character analysis for The Nurse from Romeo & Juliet. I need to know character traits for the Nurse, and evidence behind them.

If you are writing the character analysis, you actually have to do some detective work to find out what the nurse's character traits are.  You can examine the following:

The nurse's actual words.  Check out the nurse's longer speeches in particular.  You'll notice that she makes lots of jokes/puns.  What kind of jokes are they?  What do they say about her personality?

The nurse's relationship with Juliet.  This is her closest relationship, so it should show the audience something about her.  Is she caring or uncaring?  Loyal or not?  Selfish or selfless?

The ways in which the nurse helps Romeo and Juliet.  Is the nurse acting with forethought, or is she being hasty?  Does she handle things in an intelligent fashion?  Does she make good or bad decisions?

The nurse's behavior around Romeo and his friends in 2.4.  Is she behaving like a servant addressing a group of young noblemen?  What does this mean in terms of her self-image?

There is lots of other information to work with, but hopefully this will give you a good start.

Good Luck!