Looking at those pictures alone you would never guess that you were looking a a captive polar bear! It looks more like a polar bear near civilisation that is eating a salmon that someone has carelessly discarded! She always looked healthy at the zoo but she looks stunning in those pictures. If ANYONE has any doubtsas to the long terms intentions of Edinburgh Zoo, Highland Wildlife Park and The Royal Zoological Society of Scotland's housing, care and standards of welfare fot the animals then I would say look at what they've done for Mercedes, look at Budongo Trail. It's going to be nothing short of the best for these animals!
That looks like the best move for any captive animal though, short of a re-release into the wild!