I have come to conclusion that Kelly Kelly probably thought to quit the WWE now since shes done everything in WWE shes feuded with every diva on the roster, shes had her Wrestlemania moment, shes won the divas title. So shes now closing her WWE chapter and starting a new chapter with whatever she does next.
Dont forget this memory of her winning the divas title
https://www.youtube.com/watch?v=Q0_joI1x-Bk