I've recently been told that my 3 year old DS is deaf - bad enough news but then I found out that my 7 year old half sister has been bullying him because of it. I was minding her at the weekend - she had a tantrum when I took HIS toys off her - I snapped and smacked her once on the bum. Now my mum (and her's obviously) won't speak to me despite the fact she smacked me when I was little!!!AIBU?????