Legal advice.. Hoarder clean up?

I need some Legal Advice.

I run a cleaning business and have been hired by a woman to clean her Hoarder house. Her home was completely covered in Dog and cat feces and urine. Her furniture was soaked with urine. There was even feces on the walls. Trash everywhere etc. We went in there and cleaned everything. It took us about 2 weeks and all we had left was her bathroom and a second wipe down of everything. She paid us half up front then $300 Wednesday. So she still owes us $550. Well she has been nothing but trouble from the beginning. Complaining about everything! Under her bed there was tons of trash/dishes and etc. Everything was covered in poop and urine. So we threw everything away. Anything that was covered in feces and urine we tossed. Well she texted us thursday and fired us and is refusing to pay us the $550 she owes us because she said she wants the dishes kept and we shouldn't have thrown anything away. Again, the job was completed except for her bathroom and a final wipe down.

There is a lot more details but this is long enough.. do we have a case to take her to court for the remaining $550? I have all before and after pictures.