She's a killer, CREEEPP

I pictured a sort of Scooby Doo sort of set up here. The narrator of this story is tired of this girl's constant nagging. He then threatens to threaten the girl if she keeps doing it (MWAH HA HA HA HA *insert lighting crash*). Later he's found out and is caught "due to those meddling kids and their dumb dog". This poem's is foreboding and creepy. I mean if this guy doesn't the girl's nagging then why is he haunting her later? He obviously doesn't like her, and why does she have to tell other men about him? Also the fact that he's threatening to haunt her is creepy and a little possessive on this guy's part. It just seems a like a really dark threat for something as minuscule as nagging.