User blog comment:FairyRaven/Fairy Tail Chapter 456: Orders, Review and Commentary/@comment-4933386-20151010110942/@comment-7418318-20151010123742

Not to mention that it'd go against Brandish's character.

Humiliating someone in addition to capturing them is additional effort and troublesome. Effort and troublesome stuff are things that Brandish repeately stated to hate, so I'm sure that if Brandish were only there to capture Lucy, she just turn her tiny, put her into the tube where Marin is right now and be gone again in the blink of an eye.