A woman in a blue jacket dragging a child on a sled through the snow.
A mother and her child are playing in the snow.
A woman dragging a child on a sled through the snow may not be dragging her own child, and they may not be playing.
A woman can drag a child's sled through the snow without the woman being a mother, and without the child being her child. Pulling a child on a sled could be for the purposes of transporting the child, and does not necessarily mean that they are playing.
A child may be her child or someone else's child and a child may be dragged through the snow on a sled for other reasons besides playing.