This apparently is an Austrian term, but isn't what you describe usually called 'cross-examination'?

If you write the term in one word, as it should be, you will at least get a LEO result that has something to do with law issues:

Siehe Wörterbuch: kontradiktorisch*

(Sorry, don't know anything about these matters myself, so I can't explain any further).

The idea is not to expose the victims to the court situation (public, yellow press etc.); so in that respect it's different from what one would usually call "cross examination".
"Kontadiktorisch" however indicates that - very much like in a traditional cross examination - prosecution and defence are present and have an opportunity to ask the questions they consider necessary.