So, this response includes explanations from the LNs. I don’t expect that this stuff will be explained in the anime, so I guess I don’t consider it a spoiler.

The schnesturm was supposed to be much more injured than that, and maybe even sort of pinned in place. Meanwhile, although they didn’t explain why specifically, my guess is either it’s a property of the spear or that Ferdinand is aiming her hand, but Ferdinand acted like Liedenshaft’s spear couldn’t miss in that situation. The fight in the anime was indeed unimpressive.

Edit: And Rozemyne was not so close to the fight. She was in the area with layknights who were only cleaning up the stragglers of the Lord of Winter’s subordinates who got past the front lines. IIRC, she was never in any danger at all in this fight. Until she was called by Ferdinand, her most difficult job was keeping her high beast steady, which wasn’t easy.

And as for Angelica, the situation is even worse for her. If she failed, she wouldn’t just lose her job, she’d be stripped of her nobility and be forced to work as a servant for the rest of her life. If you’ll remember, nobles are people who graduated from the academy. With Angelica’s personality, she’d probably end up the same as a devouring commoner under a submission contract.