I'm sure your daughter will be able to look back at both your wife and yourself as good role models, I assume her teachers are generally good people, both at school and at the extra curricular stuff she does (swim teachers, etc). Your daughter has spent some time in hospital, so hopefully she met some lovely people who are kind and supportive there, and then I assume that the friends that you've had over are generally nice people too that your daughter can look up to. Of course, she also has her uncle back in Australia who seems pretty decent and kind.

I think there's a lot more people around for your daughter than may be initially obvious.