shishi, but a perfunctory GS is none of these. A kosher Jew who says GS (and a Jew is taken to be kosher unless proven otherwise) does not say it to invite the recipient to explain how she feels, to create familiarity of heart or mind, or to generate affection, least of all in the public domain. I continue to flinch from interpreting it as evidence of dire sin.
Incidentally, I ordinarily don’t say GS or other perfunctory things (boker tov, etc.) to women or girls. I consider it a chumra that reminds me to respect tsniut generally. I do respond if spoken to; that belongs to derekh erets and prevents Torah from being taken as grim and antisocial.