Kay just had a feeling that Serena wouldn't like what she was suggesting, but she also knew what she was suggesting was the safest option. She didn't want to put Serena even more in danger than she already had been, so when Bane spoke up his agreement with her opinion she was actually really thankful and relieved.

"Serena I know you wanna be pro-active here and you would rather be in the action so to speak but sometimes you need to know when to fight and when to step back. This is a time to step back and let us handle it for once. You're safe here, out there you're not. So please for once, don't be stubborn" Kay told her firmly but softly.