She's claiming it's a steak knife because irregular pattern = serrations.
This is probably a scratch from rubbing a fatty part of the body up against something, the skin wrinkles slightly creating that pattern. And let's be real here that's a dermal scratch.
From experience, people trying to cause massive harm with a knife do not slash, they stab, slashing is a panic response. And if they were targeting her and premeditated this attack would they really try to slash the thickest part of her?
Low effort pity post.
Also lol at "If they haven't caught you already!". Oh yeah, cops would really prioritize this. "You say a man from the internet attacked you with a knife. Kiwi what? What farm? Miss are you okay?"