did you train her ? Autos can often take just as long as photos if not longer if training methods are used as this tends to stunt autoflowers :) I would alwasy add 2 weeks to whatever to breeder says anyway and it tends not to be too far off. I would re evaluate the plant in a couple of weeks and looks then :) best of luck buddy. it could also mean the plants metabilism is slowing down basically meaning the plant is dying which is again quite normal for autoflowers as they have a predetermined life cycle :)