Or do it to your spouse, family, friends (if they can take it) or a therapist or place of worship person. She, imo, just wants to wallow in her grief. And draw in people that mark their calendars. Who marks a calendar with the number of days? Appreciate the spouse you have and future children you will have, and family you still have?
She is, imo, too young to understand, as a princess, that her dad had a wife and other children. And mother. And experienced deaths in his family -let alone his own almost in Vietnam. And managed to get through it. Albeit never easy.
BTW - anyone notice her saying about someone the older sister she never had (but does) today on the show today?