So they had broken into his home multiple times? I think it's safe to say that yeah, they would have come back. Good riddance. Career criminals and they would have wound up killing someone else if they haven't already. You live your life like that, you deserve whatever befalls you and I don't give a damn that she was supposedly pregnant - and emphasis on supposedly, because similar to everyone being certain the victims were of color before any definitive proof, there is absolutely none suggesting that this woman was indeed pregnant. She didn't value her unborns life enough to not be engaging in burglary and other nefarious activities and crimes, so why would any of her victims blink twice? The backwards public however, tends to sympathize with criminals more so than they do the victims when the shyt backfires and the predator becomes the prey, despite the fact that these same people you want to walk away would put a bullet in your mothers head if there was a lick to be hit.
Unfortunately for her, she ran across an individual that didn't believe in letting one who would cause them and theirs bodily harm. He crushed her completely, and I guarantee anyone thinking about robbing that home in the future will think twice.