Just Heard or Listened to?

Now I wonder whether I just heard,
Or listened to her movements behind me,
As she descended the flight of stairs,
Stepped onto the landing,
Walked through the narrow gap,
Between the two hedgerows,
Lining the long, two-storied hall,
Crossed the leaf-strewn tarmac beyond it,
Trod on the pebbles,
Scattered on the grassless earth,
By the old Tamarind tree,
Climbed on to the makeshift bridge-
Three narrow crude planks,
Overlying a crude cube of sand,
Spanning the grassy ditch,
Started down the footpath,
Meandering through the meadow,
Sidestepped to avoid the knotty roots
Of the Kahata tree,
Gripping the footworn path,
Walked onto to the concrete lid of the drain,
By the tall lamp-post.