You say you've tried everything, yet you came here and asked for help.
Here's my question - how long did you keep her housed in a six quart tub?
Did you allow her a week to acclimate in that small tub with a snug hide, and then offer an appropriately sized live prey item?
The people who have responded so far have experience with getting picky eaters to start feeding and are sharing proven methods that have worked for them. No one called you stupid.
I've been keeping ball pythons for over three years now and I'm STILL learning about them from those more experienced than myself. Once you think you know everything there is to know, that's when the snake shows you just how much you don't know.
If you truly want what's best for Calypso, you'll quit being so defensive and answer the questions that people are asking to HELP you, and not look at them as attacks. We have to ask questions in order to help you. We can't assume anything.
So - on that note, you also say your husbandry is perfect - can you please describe what you are housing her in, size, the exact temps, what you are using to measure temps? Can you post a picture of her enclosure?