Why is josephine especially careful about the way she tells her sister of Mr Mallards death?

Josephine is especially careful in conveying the news of Mr. Mallard's death to her sister, Louise, because she understands the emotional fragility and heart condition that Louise possesses. She fears that an abrupt revelation could lead to a severe shock or distress, potentially exacerbating Louise's health issues. Josephine's sensitivity reflects her deep concern for her sister's well-being, as she tries to navigate the delicate balance between delivering the tragic news and protecting Louise from overwhelming grief.