As a Dane
Meryl Streep is speaking in an Eastern German accent. She does not sound Danish at all...
In fact, none of the actors sound Danish. It must be the film trend of implementing a Standard American accent on top of the Danish accent, I suppose, but either way I've never heard a Dane with any of the accents in this film and I grew up there and have Danish family in the states.
Some of my family when speaking English can be very difficult to understand because of their thick accent. So she may have had the accent down but was directed to be more articulate.
Whatever her character was meant to be she didn't end up feeling Danish.