I don't really know, I arrived home and was received by the cat meowing for me to folow her, she obviously wanted to ahow me what happened. She went into her makeshift mouse -a box with cloth in the bedroom- and when I looked in, she'd just put her head into the remaining half of the kitten and then looked around licking herself and meowing. I fell on my knees, pulled her away, and pulled the box up as she strove to get back in. :-S
I prefered to think the kitten died for whatever reason and she just saw it as a kind of means of disposing of the remains, but why lead me like that and then start to chew?? If you are open to a maybe unlikelier explanation, there was supposedly a nasty spirit infestation going on at the time but I'm not going into that here. Anyway, whatever happened that day, that cat took a liking to cannibalism - a few months later she stalked another cat as she was giving birth and my mother literally had to pull one out of her jaws. After that, I gave the cat away to somebody with a fruit warehopuse where there were no other cats.