Gracie ADORES Mack!! He can make her laugh like no other. When he's sad, she's sad. When he is in trouble, she gets upset with me. She loves to hug him and is always trying to hold his hand when in their car seats in the van. He tries to act like he wants to have nothing to do with her...especially when I'm watching. However, I have seen him holding her hand when he thinks I don't know. I know you love her back Mack. You are good brother!