Looks like Bella was not too into playing with mommy dearest and while someone wanted to show she is a close, caring & wonderful mother. It looks so awkward and unnatural.
Maybe it is just me but when I see Mary interacting with once of the children, I always go back to when I was younger and remember a fellow child I knew. His room was amazing; entertainment center with a big television, sound system, game systems, computer, even a small stocked refrigerator. I thought he was so lucky! Then one day he told me he would give it all away if his parents would just play a game with him once a week like mine did.