``This notice is to inform you that child care services will be terminated in two weeks because at this time I am unable to continue offering child care services for your family. Your child's last day of care will be (date). Your remaining balance for the last two weeks of care is (amount) and is due on (date).''
Two-week notice: Many daycare providers require a minimum two-week notice for termination of services. This applies to both parents voluntarily withdrawing their child and providers terminating care. Provider-specific policies: Your daycare may have a longer or shorter notice period specified in its contract.
Your letter of resignation doesn't have to include an explanation; just that you're leaving, and the date of your last day. If people ask you directly why you're leaving, you can say 'scheduling conflicts with childcare', or 'too many family responsibilities''. You can be vague, but firm.
Just email with enough notice as per the contract and say when her last day will be. Thank them for the care. All done.