My husband had a situation sort of like that before I met him… domestic where the gal came up on his porch banging on the door to be let in, fleeing a guy. He let her in, he was armed (of course, he always is) and called the cops.
The guy fled, but when the police arrived it got ugly. She spoke no English and apparently had managed some sort of report as well. When the cops arrived, he put the firearm in another room and opened the door. A first-week-on-the-job rookie mistook him for the perp. The rookie drew on him, shaking so badly my hubby was sure he was going to get shot. The rookie ordered him out on the driveway then collar-jerked my husband to the ground, and stood over him shaking and gun drawn and shouting at him to shut up… wouldnt let him say anything or explain he was the homeowner who called. Meanwhile the gal was screaming and shouting in Spanish.
Second cop on the scene backed the rookie but wasn’t doing much to calm him down. My husband finally got him to step the rookie back, and got them to call the Sargent who arrived shortly. Turned out the sarge knew my husband (hubby had trained him and others on the department) and got it sorted out.
My husband says even in Vietnam he has never been more sure that he was about to be shot than that day.