Extreme Navel Torture IV

I love watching and feeling my girlfriend's perfect six-pack abs. It would look even better with more accessories so I stuck a knife into her navel. Blood kept oozing out of her navel so I had to wipe it off a few times with some tissue. I was amazed she could still be standing so I punched her hard in the abs. She went down in pain but I kept torturing her by wiggling the knife and shredding her intestines. How painful would it be for her if I punched her again in the abs?