To my dear eldest daughter,
Unfortunately, even though you will be in town this weekend, I cannot make time to see you. I know I haven't seen you or my grand-daughter for months... but I will be busy spending time with my new lover. I realise that recently I have been very demanding of your time during my period of lonliness (after my first lover left me)... but I am much happier now with my new lover, so I just can't fit you into my weekend. Have a nice time whatever you end up doing.