How to pronounce “spattering”(verb) in English

"Sorry kids, mommy's gone." I pull out my Grange. Their heads kick back in successive jerks, bang bang bang down theline, holes appearing on their foreheads like paint and their brains spattering out the back. Their bodies flip and skid on the black mirror floor. They land in jumbled piles ofmisaligned limbs. For a second, gunpowder burn makes the stench bearable.