I would really like to see a class for this character. I love the concept: Carol uses a bowling ball as a weapon. The ball (crystal ball?) contains the skull and spirit of her murdered father. It's like a mixture of the Shield Champion and the Spiritualist. I lack the mental focus to define this one. So, I leave it to you all as a friendly challenge.
Also, lets assume that Carol is a low-to-mid level Bowler, and that more powers/abilities are possible at higher levels.