Yes, he absolutely could. She had a gag reflex and was choking, clearing her airway would likely save her, and he actively chose not to. Calling an ambulance about an opiate OD and possibly some breathing assistance would give her a good shot at survival.
None of that shit was good, it was just free-/crippleware/the only thing people bothered with. OBS is not perfect either, but thinking back to Fraps and dxtory makes me glad those days are over. The fact that it’s FOSS is pretty awesome.