I gave Ruby a little talk about it before hand that went something like this: "This is Jack's first time playing in the snow, so you need to be very nice to him. No snow on his head or his face. Okay?"
And she said okay and that she would take good care of him.
Seven or eight minutes into their playing I heard Jack screaming and looked out to see Ruby sitting on him and pushing his face into the snow. Seriously?! So Jack's first snow adventure was very short. And traumatic. And just a little fun.