The first thing I thought of was Dutch. I see her bloodlines aren't but that very upright neck, slightly noble head, and flatter croup combined with the active movement made me think KWPN. Not sure who, exactly, but I like her.
Bred to a dressage type mare, E II is producing some extremely nice dressage type horses and they have jump! My filly is showing very good reach and lots of freedom in the shoulders, plus very good behind. She loves to jump, mostly out of whatever she is in , but she should be a very nice dressage horse.
I have to confess, that I slightly disagree with the other opinions in this thread. From the video, I think she really resembles the hannoverian W-line.
When I watched the video, I was reminded of Walk on Top (Luise Nathhorst) I think he was from Wenzel...