A 26-year-old is struggling with her relationship with her 29-year-old sister, feeling that the sister is jealous of her achievements. The older sister often reacts negatively and makes snide remarks about the younger sister's successes. This tension has led the younger sister to walk on eggshells and fear sharing positive news, including her current relationship, due to past sabotage. She seeks advice on managing this relationship, wondering whether to address her sister's feelings directly, be secretive, or consider cutting her off.