Friar Romeos priest, was supposed to get a letter to Romeo explaining what the Juliet’s plan was to get out of the marriage with Paris.
But since the letter never made it to Romeo because the friar was suspected “sick” he couldn’t come into Verona, therefor he couldn’t get the letter to Romeo. I think the nurse went and told the guards that the friar was sick because she had made it clear she didn’t want Juliet to be with Romeo any more instead she wanted Juliet to be with Paris, only because Romeo fought tybalt and Romeo won, tybalt then died after being stabbed with Romeos sword. So the nurse could have set it all up knowing Juliet wasn’t really dead she was only asleep hoping Romeo thought she was dead just like every one else, hoping Romeo would kill himself to be with Juliet, which in fact he did just before Juliet awoke looking for him in the dark family
tomb.
Although the nurse is supposed to be truthful and knobble to Juliet she most likely wasn’t, manly because she thought Juliet should just marry Paris and get it over with even thou Juliet was already married to Romeo, and because of the feuding they couldn’t exactly be together all the time like they were really married, instead they had to sneak around every time they wanted to see each other. but the nurse changed her mind about Romeo and Juliet’s ideal of them being married instead she insisted on Juliet marring Paris which Juliet did not want to do she wanted her Romeo, so when she took the sleeping position she thought that friar and the nurse would get every thing to Romeo explaining what had happened but instead it never mad it to him and he killed himself next to her all because of a letter not being delivered when it needed to be and when Juliet awoke from her sleep she realize Romeo killed himself to be with her and she had done the same to be with Romeo , which also brought the feuding families together as one for the first time, but it shouldn’t have had to happen the way it did but since the Capulet’s lost there daughter and the Montague’s lost their son they realized how much damage it was doing to every one and so they came together as one after they had realized how much they needed to actually be together just like Romeo and Juliet.