Key legal question
Whether the appeal was admissible for the eldest daughter and against the lower cantonal decisions.
Extracted holding
No enforceable right remained for the adult daughter, and the federal appeal could only target the cantonal last-instance judgment.
Extracted reasoning
For direct reliance on Article 8 ECHR, the child's age at the time of the federal judgment is decisive; the daughter was already adult. The federal appeal under the relevant statute lies only against the cantonal last-instance decision.