Cole's chomping green beans, Anna's chomping Cole

Cole is continuing to enjoy more than just a bottle. He had green beans last night. He did OK with it but it will take some practice. We were at our neighbor's last night eating dinner and Anna reached over and bit the mess out of Cole. She left the worst bite mark on his arm. I don't know what her problem is but it is driving me crazy. I just wish she wouldn't hurt him. The poor guy seems to be the victim of all of her anger.