Does the nurse think there is ever a time where it's right to decieve the parents in Romeo and Juliet?I'm writing a character journal.

Since we are only allowed to answer one question at a
time, I had to edit your question so that there was only one.  The nurse is complicit in
Romeo and Juliet's elopement.  Without the Capulets' permission and at Juliet's bidding,
the nurse meets with Romeo to make arrangements for the wedding. She reports back to
Juliet:

Then
hie you hence to Friar Laurence' cell;

There stays a
husband to make you a
wife.

The nurse does not lie
to the parents, but she is definitely acting behind their backs.  After Romeo kills
Tybalt, the nurse goes to find Romeo to bid him to come to Juliet's room, another act of
loyalty to Juliet but of betrayal to her parents.

So, the
answer to your question is yes the nurse believes that deceiving parents is sometimes
right.  She seems to value Juliet's happiness more than she does her loyalty to the
parents.  The nurse does not hesitate to arrange a wedding and wedding night between
Juliet and the Capulets' most despised enemy: Romeo Montague.