My ball python was stubborn with eating

I know that ball pythons are picky eaters, breeder fed live ... I tried with all my might to do F/T. I tried everything. Using a separate feeding enclosure. Heating up hot side a bit higher so that it will make her hungrier. I tried gerbils mice rats of all different sizes (never bigger than 1.5 times bigger than the biggest part of the abdomen) . I had a temperature gun checked, gave an extra shot with the hairdryer, I tried at night I tried different colors of rodents... NOTHINGGGG I wiggled the mouse by the tail i mock hopped and moved the mouse - no interest.. Finally gave it a LIVE today. Took it immediately... STUBBORN.