Yes, that is right. It was a different Dentist.
The Police have the power to compel that Dentist (who signed Florabella's passport photos) to testify, if they are still alive. The Police can get further information from the banks, the doctors and the airlines. In addition, they could get some definitive answers from Mr Remakel in Luxembourg as the police there can interview him under oath and find out definitively of his movements between 1994 and 1997 -which is a LOT different to just some silly media stunt.
Note that I do know of another inventor (Swiss) who spends half the year in Switzerland and then spends the northern winter on the North coast of NSW. So this pattern might be a "thing"...
So I think going to the inquest will be very beneficial to Sally as the police will have wider powers to gain some answers. The media attention is great because it will force the Police to do a thorough job this time. They didn't necessarily do a *bad* job last time but they made some assumptions which guided their inquiries.
I note that earlier posts said that she seems to have gone missing of her own volition, because Florabella's behaviour is forced to change when Sally lodges her 'occurance' with the Police (the taking of money out of accounts must cease). It's an interesting take as that is exactly when she - or the person who stole her identity - stopped their activity (at least in Australia).
Another thing I'd like like to add is that I did some work for Red Cross missing persons unit and they said that if they find a person who does not wish their former family to know they are still alive *they have to pretend to the family that the person was not located*. If the Salvos had the same policy then the Wilsons and Sally may not actually know if they located her or not. The fact they said that she was mad about the car money might just be a hint that they DID find her.