Question juridique clé
Whether the appeal against the cantonal return order was admissible and whether new facts and evidence could be considered.
Solution extraite
The appeal was admissible in principle, but new factual allegations and evidence were inadmissible; review was limited to the established facts unless manifestly incorrect.
Motifs extraits
The challenged decision was a final cantonal judgment in a Hague Convention return case. Under the Federal Supreme Court Act, new facts and evidence are excluded and the factual findings of the lower court bind the Federal Court absent manifest error.