An acquaintance had a similar experience --- Alerted in the night by his barking dogs to some disturbance in his back yard, he grabbed the still-loaded shotgun he'd brought home from a predator hunt, and slid open the Arcadia door to investigate. A young man, yelling almost incoherently, demanding entry, barged through the door, whereupon the homeowner ( a former MP) butt-stroked him across the bridge of the nose with his 870, yelled to his wife to go to the (two, little) kids' bedroom and call 911, which she thankfully did, without taking time to shriek, or question his tone of voice, raise women's rights issues, or the like... The intruder staggered backward through the patio door, still yelling, recovered his balance if not his senses or composure, and charged back through the door into the family room, whereupon David shot him dead at powderburn range. The intruder, even in death, was graceless enough to leave nasty stains to clean up. Cops arrived, ex post facto, of course, separating husband and wife and getting separate statements from each. Between their identical and corroborating accounts of the incident from their different perspectives, and the 911 recording which captured audio from early on, exonerated him. Never went to a grand jury. The kids were oblivious, slept through the whole escapade, and were not psychologically traumatized whatsoever...
The deceased's family threatened civil action, which never materialized, as it turned out that the perp was off-the-charts intoxicated, and had been justifiably shot in the course of committing multiple felonies, and so forth...
This might have turned out differently had my acquaintance shot the guy with the screwdriver through the door, and it turned out to be a 24-Hour locksmith summoned by his wife...