Sometimes, sunset can be viewed as "romantic". If the author wants to build a relationship the sunset is used as a pathetic fallacy (when the weather matches the mood). The sunset refers to love which will overall build their relationship.
her tendency to act without forethought
The big downfalls for both Romeo and Juliet are their impulsive behaviors. In this Juliet does not stop to think about the fact that she will be actually killing herself this time. Before it was only fake, now it will be real. Her first reaction to seeing that Romeo is dead is to join him, so she tries for a drop of poison that may still linger.
You did not provide the excerpt, but based on previous experiences with possible passages, i would say Reversal of fortunes, since his story is the epitome of reversal of fortunes.
Answer:
What da dog doin? https://knowyourmeme.com/memes/what-the-dog-doin
Explanation: