My sister (21) lives at home with our parents and 16 year old sister. (Mum is disabled and Dad is her carer. Sister helps out.) She asked to have my daughter, (turns 3 in July) overnight as she has done many times and I agreed. Around midnight my daughter woke up and decided she wanted to play and during that time she somehow poked my sister in the eye and left her crying in pain and unable to open her eye. I got a phonecall to say that my sister was going to have to go to hospital and her and my other sister would be dropping my daughter home in a taxi on the way to the hospital because Dad had been drinking so couldn't drive. (I don't drive myself) I said it was fine and to let me know when they're on their way and I would wait outside for them. 10 minutes later I received a phonecall from my frantic Mum who told me that my Dad had taken them in the car because a taxi was going to take a while and he had my daughter in the car with him because he couldn't leave her behind with Mum. I was furious! I cannot explain the gut wrenching fear I felt. I rang my sister and he was shouting down the phone saying, "I've only had 6 cans I'm fine". In my opinion he should never have put my daughter in the car when he'd had a drink whether that was 6 cans or 1!! The next day when my Mum phoned I told her I wanted an apology from him for putting my daughters life at risk and said he's irresponsible and unless he owns up to his mistake, accepts that he was wrong and apologises to myself and her father then he will not see her again. He is refusing to apologise and says he has nothing to apologise for as he was just taking his daughter to hospital as she was in pain.
What's people's thoughts on this? Should I just let it be or am I right in demanding an apology and keeping my child away from him until he realises the consequences of his actions?