An amusing Facebook screw up.
If I select a relationship in the first case, do I select niece or uncle? I.e. in which direction does this work?
Incompetent people create interfaces without thinking about how users will read them or understand them. In this case, there is no clue at all in the wording to tell me what specifically is desired here.
Neither way is better than the other by the way – specifying her relationship to me or mine to her makes no difference as the other is implied … but there must be clarity as to whose end is being selected here.