Maybe it was Ada’s choice to watch after you in secret, even after when her mission was more important. It’s like she always appears when you’re in trouble.

“Need my help again, do you?” Ada says as she swiftly goes through the window, a single shot through the zombie’s head before turning back at you with a frown. “Leave the mission, it’s not safe.”

As someone that betrayed and manipulated you, Ada couldn’t stop but care for you, no matter how she acted nonchalantly towards you.