Damn, if I didn't know any better, I would swear that "mass of tissue" looks like a little arm.
Funny isn't it how selective we are about tissue mass. A pile of bones found in the woods is just a mass of tissue and certainly does not have a chance to ever become a living, breathing human being. Why on earth would anyone see fit to begin a MURDER investigation over such a meaningless pile of bones? Especially when we see nothing worth looking into when it comes to an aborted fetus.