We do not have enough information to know what happened.
I suspect a hoplophobic father and a prudent homeowner who answered the door with a gun in hand and never pointed it at the girl.
How many cases have we seen where people were accused of pointing guns at people (just to make the accusation more dramatic) when they never did so?
That is a rhetorical question. I have read and been told of dozens of cases where that occured.
“We do not have enough information to know what happened.”
It may not be as important to know what happened as it is to understand what could happen when there is an unexpected knock on the door. Yes, it could be a Girl Scout dealing cookies or it could be someone with an even more sinister intent.