Lydia kept her focus on the Shoggoth before her, acting from the rage inside her. The lies, the facility, her only friend being attacked by this bitch all of it fueled her powers. As a tentacle went to attack her, she made a motion of tearing it away. Upon hearing the pained roar and seeing the tendril fall over the edge, she knew damage was being dealt. 

"Are you alright?" Ash asked, never taking their focus away from the monstrosity before them but were concerned about their human.