Miles didn't step in front of Angeline. " Who is James?", Miles ask. Miles could use the Crystal if freaks get out of line. The last thing  Miles want is the crystal doings a fight over. " I don't care if this female titan and who ever is a act. I am aware of a bigger threat far bigger than these weak titans all of them including mine.", Miles hinted. If a crystal holding human dwell in lore Miles is quickly getting out. The last thing crystal holders want is retaliation being a bastard on the others turf. Miles hinted. Angeline and scientist probably like what is more dangerous than titans.