I talked to my dad about this one and here’s what we landed on:

Could Carol kill someone by bludgeoning them with a regular bowling ball? Yes. It’s a murder weapon.

Could Carol kill someone by throwing a regular bowling ball at them? Yes. It’s a murder weapon.

Could Carol kill someone by bludgeoning them with her father’s skull/bowling ball? Yes. He’s a murder weapon.

Could Carol kill someone by throwing her father’s skull/bowling ball at them? If he doesn’t course-correct, yes, he’s still the murder weapon. Where it gets murky is when she throws him and he uses his power to course-correct.

See, Carmine (Carol’s father) is able to levitate his skull independently, but in order to get revenge on the person who murdered him, he went to his daughter to get her to help him. She got him put into a bowling ball at a pro shop. At this point, Carmine could probably have gone off and killed his murderer on his own now that he had enough weight to him to be lethal, but he doesn’t; he goes along with Carol and is kept in her bag, not using his levitation until she decides to throw him. To me, this implies that, for whatever reason, he wouldn’t be able to kill someone without her help.

Now, this unfortunately still doesn’t disambiguate this, because now the question is: Is Carmine the murder weapon or is Carol the accomplice?

…And there isn’t exactly a clear answer to that. Personally, I’d like to believe that Carmine would see it as passing his power down to Carol and essentially being Carol’s power, which would qualify her, but that is a subjective point of view. I would still like to post a picture of her here though.

Thank you for your submission! ((And for reminding me about this movie I feel like I just got sent back in time by like a decade))