Our 5 month old plays with me just fine. She will mouth my fingers with low pressure but not bite. If she does by accident, I correct her. I can put my fingers right in her mouth and she won't bite down. My wife, on the other hand, is apparenty her target. I have shown my wife how to do the "OUCH' loudly and walk away for a bit. This does not seem to be working to this point. Any suggestions?