I would say its quite normal tbh, Olivers been walking about 5mth now and he still wobbles..like Tayla - when he gets a bit giddy and his brains engaging, but his feet arn't reacting as quick as he wants them too. Also when he's tiered he wobbles, stumbles and topples over.
How long has she been walking in shoes? (I remember you saying you had trouble keeping shoes on her at times) Do you find she wobbles more when she's wearing shoes or is she the same bear foot?
I don't think Clarkes shoes are gunna make a whole load of difference tbh..as long as they are well fitted, supported shoes then that should be ok.