The antagonist is the character that somehow obstruct/prevent the main character in achieving his/her goals.
In the story , Tybalt is portrayed as Juliet's cousin who are not agree with Romeo's relationship with Juliet
hope this helps
It is something what shows that person is happy
I'm not sure but is it being implied?
This could be a variety of things, for example “she fell over” “she saw her mum” ect
