Thursday Night
Katherine didn't have to ask Styles to understand what was going on seeing that he and Amelia were on a secret mission to infiltrate Park Group's main office building. As to why Amelia was doing this, she could only guess that she wanted to find evidence at Frederick's office.
Katherine knew that Damien had already given instructions to lay low. And without backup, she was worried that Amelia might get in trouble. Sure, Amelia was one of the best Shadow agents and was very skillful, but this was Frederick Park she was going head to head against. They shouldn't be too lax about this whole thing.
There were notifications and beeping sounds on the monitors that caught Styles's attention. He immediately put the headphones on, ignoring her presence and started typing away, trying to bypass the security system. Katherine knew that once Styles was in the zone, he couldn't be disturbed as he would be very focused on the mission.