"I'm okay," Anna said as she kicked the wounded ghoul's weapon away and cuffed him, "I got one for questioning, probably."
"Cooperate if you want to live," Anna whispered in the ghoul's ear, "nod if you understand."
Anna quickly dips her finger in some blood and scrawls MS-13 on the wall, in an attempt to make it look like gang warfare.
As she sucked her finger clean, she scanned the room quickly to determine if any other ghouls were still alive.
SpoilerAssuming all goes to plan, Anna intends to obfuscate the ghoul and move quickly as Karl suggested to get back to the Church to question him there, but whether she brings this ghoul or another depends on if any others are still alive, and whether Victor dominated any of them outside, but I don't think any escaped through the window.