She will come around. Danes are VERY people oriented. I don't know her background so I can't say with any authority how long, butall the danes I know tend to be very forgiving of people and if you treat her kindly, she will be yours forever. They are curious, too and a new home is a lot to take in. I have done several transports and these dogs acted in a similar way. Make sure, though you establish the pack early on, though. an argument between a GSD and a dane is not something you want to happen. PLease Please post pics!@
Can you tell me how much she weighs? Maggie looks anorexic, she is 33 inches at the withers and weighs only about 90 lbs. Danes are supposed to be very lean, breeders in this country tend towards the greyhound look. European danes are heavier boned and stockier. Maggie is extremely healthy. We were so concerned about her weight when she was younger, we took her in to the vet every week or so for a weigh in. He sisters and mother were the same way. With those long legs, excess weigh is a huge issue, so slow weigh gain for her would be best.
Magggie looks like this when she lays on her side.

And yet she is at perfect weight.