I watched the whole match and what struck me is that she actually has a different service motion then for example when she played Stosur at Wimbledon.
She kind of cut it off a bit, her backswing is shorter. Also she put an incredible amount of topspin on the serve with pretty much no pace
In the rally she is not that bad actually but she lacks consistency and she barely hit any winners. She kind of run in AMG's errors.