Some say goodnight at night — Seclusion

Some say goodnight-at night-1
I say goodnight by day-
Good-bye-the Going utter me-
Goodnight, I still reply-

For parting, that is night, 5
And presence, simply dawn-
Itself, the purple on the height
Denominated morn.
(F.586/J.1739)
[1] goodnight at night:: what normal people would say at night.
[2] goodnight by day:: day is dark (different) for a recluse.
[3] the Going utter me:: someone pushed her to conceal herself.
[4] Goodnight, still reply:: she followed peacefully.
[5] parting, is night:: to leave the society is dark to her.
[6] presence, dawn:: to present in the society with a handsome demeanour, is simply the beginning. presence:: demeanour, carriage, or aspect of a person, esp. when stately or impressive; nobleness, majesty, or handsomeness of bearing or appearance. (OED 5a). dawn:: the beginning, commencement, rise (OED 2).
[7] purple, height:: the dignity in high position itself, is called morn, the next beginning.
[8] morn:: morrow, the next morning.