I would keep it more professional. I would remove the word SORRY and remove the personal information about another family being pregnant. I wouldn't put your personal information about paying someone to check your family. its non of your clients business that you are paying someone to do that. and basically telling them to look for cheaper care might not go over every well. Keep it professional and keep emotion out of it.
I would write something like this. Since lice are contagious it falls under the sick day policy in your signed contract. Therefore you are obligated to pay your fees in full for the time your child has missed. As for your financial situation, this falls under clients personal information and as per the contract can not be discussed with me the provider. Thank you for your understanding.
Yes I do have a clause about only speaking to the parents about their child's care and not their personal lives in my contract. This is to protect me from parents seperating and/or in finacial trouble, not my business. however I do end up talking to them about other parts of their personal lives.