She won't eat her food but she'll eat mine what should I do?

If she will eat your food then she isn't starving.
No dog will starve itself when there is some sort of food on offer and it sounds like she just prefers what you have on offer.

When was her last vet check and how old is she?

Hi and thanks for answer me.. :)she's 3 and her last vet cheek was about 6 months ago

If you were offered chocolate bars, would you want to go back to eating vegetables?

You are training your dog, or maybe your dog is training you. She is learning that if she doesn't eat her own food, she will get a nice treat in the sense of human food.