In grammar, a question tag is a very short clause at the end of a statement which changes the statement into a question. For example, in 'She said half price, didn't she?' , the words 'didn't she' are a question tag.
In these lines from ¨Grandma Ling¨ the narrator describes herself (I guess it´s a she), using obviously the sight sense. Most probably the narrator stands in front of a mirror or a window that reflects the narrator´s image.
