Also, know your damn rights. Notice that they didn’t leave until she specifically said that they did not have permission to be on her property.

Law enforcement is considered to have implicit permission to come to your house, provided you have a route of access that is publicly accessible, like a sidewalk or a driveway (that isn’t gated). But that implicit permission is overridden if you explicitly withdraw permission. It’s good that they knew not to let them in without a warrant (though they didn’t have to open the door, or even answer it), but you also need to say “You do not have permission to be on my property.” No matter how much you cuss them out, if you don’t say it, it doesn’t count.

There is an exception for cases of “hot pursuit,” like if they see somebody kill someone and run into a house, they don’t need a warrant. But there’s a lot of restrictions on that and they’re probably not going to bother trying to get your consent in the first place if they have that.

Obviously that only goes as far as the law applies. Unrelated, but another right you should know is the right to bear arms.