You bunch of iodots!

What is the Chinese word here? 書呆子. Gap is absolutelt liable fot its customer, let along the floor is slippery. Plus medical payment is paid regardless of fault.
So to begin with, you can seek reimbursement of your medical bills from Gap.

2ndly, if you want Gap to pay for the baby's pain and suffering, then it is a laiblity issue. Means you have to prove they were negligent. IMO, you have a case here. You should have tried to settle with them in the begining. It is not too late though.

If they refuse to settle, you know what u got to do.