Lorna would do whatever is told of her. She made sure to protect Scott and Jean while they worked on getting Apocalypse out of Alex. It was a blessing in disguise that these followers of Apocalypse happened to be metal, not that it wouldn't be a problem if they weren't, it just matters more easier for her to handle them and keep them away from the two.
Lorna kept on throwing metal shards towards the creatures that kept on advancing towards the three of them. She glanced over her shoulder at Scott, wondering what kind of planned he had. She looked away and continued fighting back the metal creatures.