Try to figure out if I'm the "difficult" mom

[daycaremum]

First, if your child had diarrhea at home then he should have stayed home till he had not had one for 24 hours if that is in the contract you signed. Also, if you are requested the same thing about a fever, that also includes a low grade fever if that is what is in your contract.
That all being said, that dad is crazy!!! I would be calling to talk with your daycare provider to see if she know her husband sent out this text and if she is not apologetic or regretful about how he handled it I would be seeking care elsewhere. It was completely unprofessional. You are in her daycare, not his. If she is apologetic you need to have her reassure you that nothing like that will happen again and that all daycare business is to be done between you and her, never with the husband, and let her know that if it happens again you will be seeking care elsewhere.