Kernrechtsfrage
Whether the nullity appeal against the cantonal interlocutory decision was admissible
Extrahierter Entscheid
Yes. The decision finally determined a point of federal law, namely the applicability of Art. 10c LAVI to the ordered expertise.
Extrahierte Begründung
An interlocutory decision is open to nullity appeal when the cantonal authority has definitively ruled on a federal-law issue; the appellant, as an alleged victim, could invoke LAVI procedural rights.