Thank you all for your answers and your understanding of my sister's predicament.
I think my best bet would be to take her to New Zealand as I don't think there are body scanners there and she's always wanted to go there. We live in Europe so we need to stop somewhere in Asia on our way to NZ.
Dubai being out of the question in light of what you all told me where would be the best place to stop ? Many companies stop in Shanghai or Bejing. Stopping in Australia looks impossible because of the body scanners issue.