I think everyone else has given great advice, I just want to add one more thing.
Make sure you communicate openly with your provider. Your provider will be much more willing to work with you and your child with open lines of communication. Understand that this is also hard on the provider... hearing your child cry for most of the day is so disheartening and can wear them down very quickly! Work out a plan of action with your provider, make sure she knows you are working to resolve the situation, and be patient.
