When viewing the Bramble Maze cast animation on the effigies, she uses her tendril/whip weapon thing on her side and "throws" it. But when viewed in-game, the weapon does not move at all and stays where it is.

When looking at the animations with the workshop tools, the actual animations used in-game don't match the animations used by the effigies. The effigy versions (default and immortal anim) have the weapon on her side animated as well, while the anims used by the spell do not.