Sadly it’s a no win situation for you - if you mention it to your son he’s sure to take her side which will then cause more upset.
Continue being you- treating both children the same. Hopefully she will eventually realise she is in the wrong and will change.
Good luck.
Last letters become first - March 26
Should I hand flat keys to executors of will?
: What has been your most wasted purchased made in preparation for a holiday?



