There is no mention of Rosaline's feelings but she probably would not have cared
Depressed
Romeo is in love with Rosaline and she does not feel the same way about him.
How do you feel about someone you love? Why you love them, of course. The quality of Romeo's love for Rosaline in Act 1 Scene 2 is contrasted with the quality of his love for Juliet in Act 2 Scene 2, however. Romeo's love for Rosaline is conventional and his expression of it is mannered, conventional and flat. When the real thing gets him, he explodes in poetry.
You would feel very confused and conflicted being in love with your worst enemy who killed your cousin. You would also feel very afraid for the same reason.
Well, for a start, it was reciprocated. As well, Romeo's behaviour while being Rosaline's despairing lover was totally self-indulgent and for his own benefit. With Juliet, he had to learn some self-restraint and to be cheerful about their situation even though he didn't feel it, because he was acting, not for his own benefit, but for hers.
The nurse seems to be supportive and excited about the marriage in Romeo and Juliet Act 2, Scene 5. She is happy to be helping Juliet and Romeo arrange their secret marriage and wishes them well.
He doesn't want to go at first but only changes his mind because Rosaline would be there, and then he would be able to prove his point to Benvolio that no one is more beautiful than Rosaline. And FYI it's Capulets not Caplets.
she feel in love.
She would feel betrayed because she believes that Romeo's side of the family would never hurt her even though they did not approve their marriage.
Romeo feels hesitant at first about crashing the party, but his desire to see Rosaline overcomes his initial reservations. He is anxious about being discovered but ultimately decides to take the risk for love.
Lady Capulet supports Juliet's marriage o Paris.
If you don't feel empathy for a teenaged girl who wakes up to find her husband of a couple of days, who she was hoping to meet and go away with, lying beside her dead, then probably you cannot feel empathy at all and you are a psychotic axe-murderer.