My princess is damn stubborn about anything ...and if I scold her, her grandmom and granddad scold me..what should I do??

Hi, Make it a point that whenever you scold your daughter then no one interrupts in between. Talk to your in laws and make them understand that their interference confuses the child and this will prevent her from understanding what you are making her get. I am sure, you will talk to them, they will understand.