The latter. If you hover, it looks like you're hanging around for a response, and that what you just said was merely a TACTIC. If you end it and leave not LOOKING for any response, it conveys more that this is how you feel REGARDLESS of if or how she reacts.
HEAR THIS^^^...
Waiting for her to say anything, will reveal this "letting go" to be a ruse.
Don't do this at all, if you are not ready for her to accept it at face value and say "good, thanks", AND OR for her to react in anger and blame AND OR with indifference. This is about you letting her go.
You seem to have the need to say it, rather than simply doing it. That's fine.
IF you are ready for the above reactions (or lack of any visible one) and ONLY IF YOU ARE READY for that,
then do this.
M: 57 H: 60 M: 35 yrs S30,D28,D19 H off to Alaska 2006 Recon 7/07- 8/08 *2016* X = "ALASKA 2.0" GROUND HOG DAY I File D 10/16 OW DIV 2/26/2018 X marries OW 5/2016