Two on the subway, child and guardian

I was standing by one of the subway car doors during what, for me, was a two stops train ride, the next stop being my transfer point. I noticed her as she looked up to her guardian, possibly her mother, most definitely a loved and cherished one.  Much of her silky black hair was pulled back into a ponytail, while the rest framed an upturned face with shining dark eyes and a sweet, sweet smile.  She looked to be about 5 or 6, but even then I got the impression she was small for her age. I watched her snuggle closer to her guardian, who in turn looked down at her, and drew her closer with a right handed embrace.  Content, the young girl lay her head on the woman's chest and closed her eyes. And I felt a warmth bloom within and thought of mothers, and the unique feeling of safety found in the comfort of a mother's arms.