Most of my children are Term time only which suits me however i have one parent that has a term time only who asks for regular holiday cover which up until now i have covered so in effect she is getting all year round cover but not paying for any of my or her holidays, which is fine as that was my doing( i charge full pay when they are on holiday and half pay when I'm on holiday for a all year round contract) I've got to the stage now where i no longer wish to do the holiday cover but i don't want to offend her as they are a lovely family.. How can i word it to her nicely please??