Fia, Josh and Kay all listened to Bane speak. It felt like a valid theory to them all, as well as making Fia feel a bit more justified in suggesting that her and Drake go back to this time and try and set the course on a different path. When Serena started mumbling as she was coming round, they all looked toward her, hearing what she was saying. This made Josh kneel down and take Serena's hand, "Kay is safe, you're both safe" he kept saying, hoping that taking her hand and speaking to her will help Serena come round more and fully wake. 

Kay just kept watching over everything hoping that Serena will wake soon, as she wanted to put her mind at ease that she was safe and alive. She could have only imagined how it must have been for Serena seeing her falling through the roof.