Since Scott decided to call the phone, Rowan was obligated to answer. After all, it was his operation and he should be the one dealing with the consequences—unless Archie stepped in just like last night. With the phone at hand, Rowan answered the call.
["It can only be you."] That was what Scott first said as if knowing who was behind the takedown. A lot of them were killed, and their leader was captured. Even if Arryn and the spies returned, the family would only crumble. And they knew who was behind all of it.
"Why are you calling me right now?" Rowan didn't fear speaking. Even if someone else was listening or recording the phone call, Rowan knew that it could never be the police. After all, Scott wouldn't do that. It was strange for him to have so much faith in someone who kept harming him.