contact nurse on call hun - get them to assess over the phone - i think if she's complaining when DD2 yells, i'd be talking to someone to see if they think she needs to be assessed. the dizzy thing is a worry too. there are bones in the ears, eardrum, there are many things that could have happened - or it could simply be because she's had a blow to the head. i would always err on the side of caution and get some advice.