Bad premise. Police are always notified automatically when 9-1-1 is used to summon an ambulance. That's why they're called First Responders.
If Nina were really cooking a cheese sauce starting with a roux then it would have surely burned in the time she left it unattended on the stovetop to have that lengthy conversation with Jake.
Dr Abbott accused his wife of 'ingesting' pot when she was smoking it. To ingest something means to eat or drink it.