How might data be collected for this target response?When the behavior analyst is not present ask the staff to self-monitor the therapist and collect data about her performance.Also a video recording could be implemented.
Identify several interventions that might help improve response rates. Place them in order with the least-restrictive at the top so that the interventions may be introduced systematically, adding more restrictive / less favorable interventions after the outcomes of less restrictive options have been measured.

Modeling the intervention and data collection provides feedback
Video recording