Here is what I used when I terminated a client becuase of long hours.

Dear Client

When I first started doing home daycare, it was with the stipulation that I would still be able to be there for my kids. We have been finding that my hours are starting to interfere with homework, dinner and general care of my own children. Therefore, I can no longer provide care past 5:30 to your family. Effective May 1st, my work hours will be 7 am to 5:30 pm.

Due to this, and financial reasons, I am unable to continue to care for "suzy".

She is a wonderful girl and I will miss having her around. I wish you all the best in finding a caregiver that meets all of your needs. Please feel free to give my name and phone number to another caregiver if they require a reference.

"suzy's" last day of care will be April 30th. (on a side note, I gave them over a months notice)

Thank you for your understanding

The financial part was because she was part time, I really needed to fill with a full time child. I hope this helps. You're going to feel so good when this is all done and over with.