I had the same problem of not being able to find many insults!
But here's one from Devil's Triangle that hasn't been published yet:
“Sandra?” Her lips curled in a mocking sneer. “You mean that loose woman next door?”
It was easier to find insults in Dark Bytes actually.
Her eyes on the door, she watched it give way slowly under pressure. The hinges creaked and whined until finally, it burst open. A group of undead spilled into the small cabin, hungry for her blood. A smirk grew on her lips as she aimed the revolver at the large barrel of gunpowder at her feet.
“I’ve waited long enough, you pieces of shit. Now come and get me,” she snarled.