Sisters partner has up and left and moved back in with his parents who have been actively trying to split them up for ages as they think they are better than her. He has left her with a 10 month baby and a 3 year old. She lets him have access he wants which works out one day a week. Today the baby has become quite poorly during the day while in his care. He has been dosing him with calpol every 4 hours even though she pointed out it is every 6 hours. He didn't let her know until he brought him back tonight. He has cold hands and feet and watery poo nappies and seems very poorly. Made an emergency appointment to see dr so tried to call him and left message to say urgent, could he look after 3 year old who is asleep in bed. My mum and Dad have had to make the journey to her house now as he wont answer phone even though he is glued to it all day. Eventually texted back to say whats wrong with him? Wont make to the journey of 4 miles to look after 3 year old. AIBU to call him to say tell him I am disgusted with him?