Me personally I think Serena wanted to help Lana and the key inside the room of flesh is now unavailable I think the key was the key of the cell we see in Lana in I believe when Selena was going to free Lana, Lina saw here and told Someone and she got the position as the nail tech due to her loyalty?? And the Lana we saw wearing pants were a fake robot one of replace the real Lana
