Question juridique clé
Whether joint parental authority should be terminated and sole custody assigned to the father rather than the mother.
Solution extraite
The joint parental authority was properly terminated, but custody was correctly assigned to the mother because the child's welfare and stability were better served by her placement there.
Motifs extraits
Custody after termination of joint authority depends exclusively on the child's welfare. The appellate court could rely on the thorough expert report; both parents were generally capable, but the child's close relationship with her half-siblings supported the mother's custody. No decisive reasons justified departing from the expert assessment.