To begin with, treatment in the Lidcombe Program is delivered by parents, not speech-language pathologists. It seems a minor point, but if you’re clear about that, then the rest follows easily. The mother treats this girl every day, so they can use the language they prefer – which seems to be Arabic. Your role is to train the mother to take speech measures, and correctly and safely present verbal contingencies following the girl’s stutter-free and stuttered speech. I have lots of experience using the Lidcombe Program with families who speak languages other than English, so I am confident that this approach will be successful.