It is wrong to discount someone's grief.
Jenny's friend is crying because their cat that they had for many years dies.
Jenny wants to react to friend crying.
Jenny says she knows how hard it can be to lose something you really care about and tells her friend that she's there for them.
Jenny says that her friend should just get over it because it was just a cat so it's not a big deal.
Jenny's friend feels that Jenny's support is very comforting to them in this difficult time.
Jenny's friend thinks Jenny is heartless for not accepting how upset they are over their cat's death.