Key legal question
Whether the criminal-law appeal against an interlocutory cantonal decision is admissible without irreparable legal harm
Extracted holding
The challenged decision is interlocutory and no irreparable legal harm was shown; immediate federal review is unavailable.
Extracted reasoning
The appellant did not demonstrate a legal prejudice that could not later be remedied. The father could renew his evidentiary request in the main proceedings, and the appellant could still seek a ruling on party status.