Hi I am have fired my contractor for not performing the work as promised according to funds she received is there way I can sue her to get my money ba

My contractor and I had an agreement to renovate my commercial location she was paid for more than 50% of the work to be completed but has only performed at the most up 20%. I would like to sue her for the 30% of the money that she has not used to which i believe i am entitled. She was fired from the jobsite yesterday because she refused to do any additional work without receiving more funds even though she hasnt performed all of the work necessary to justify the funds she already received. I have the contract as well as other documentation to substantiate my claim.