"Apparently she was in front of the house or at least within shouting distance. After the call didn't she shout at the players that she'd called the cops.
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Someone had suggested that the call was made after they (Kim & AV) left the house. I just took that hypothesis, and wondered how to prove or disprove it. Sorry if I wasn't clear.
Well she could have shouted that she had "called" the cops and was stating an intention rather than an accomplished event. Then 5 minutes later she actually makes the call when she's some distance from the house.