I understand having her holding the bottle established she was a mother in the process of feeding a baby, but that shot of her sticking it out the door at the two cops, is just very very odd. It's not normal looking. It looks like she's offering them each a sip.
Man, could the bad guy have been more obvious? Imagine a serial killer telling you he killed a bunch of hookers and he can still hear their cries pleading for life. Says based on a true story, but did that part really happen? Come on.