"So for the final show of Australia's Got Talent - I asked myself what are my options? (They were expecting me to perform the new single)," Halliwell blogged.
"Could I still perform the song at #94? I could pretend it hasn't happened? Denial? Hide my disappointment? Unleash the fighter ...
"Sing the song with magnificent gusto doing my best to promote it up the charts ... Maybe I could get it to a respectful number 30? Or even 60?"
Halliwell said she faced the option to "keep pushing" the single out of pride: "Or maybe I admit this song just hasn't connected."
Although she felt "gutted" when she saw the song's position in the charts, she also said its failure did not define her or her career.
"What I do know is this ... I need to look back ... Remember who I am - where I've come from and dust myself off.
"As much as I'm afraid to look like a quitter (because we all want to look like winners right?), I'm not afraid to say - I lost!
"Maybe I need to learn how to lose well in order to be a good winner?"
It hasn't been Halliwell's month.
Her former paramour Robbie Williams said the other day: "I am the first to admit I have made a couple of mistakes. Two trips to rehab. Rudebox, the album. Geri Halliwell. I should have gone for Victoria, really, shouldn't I? I'd have been really famous."