Way to go, Ghetto!
What’s the date of on your copy? The one I have has Kinderman knocking on the McNeil door with a search warrant. He wants in to ask Regan questions and to see her room.
I think Friedkin did us a favor by letting us assume that Kinderman arrived without any kind of “due force.” It certainly would have made Kinderman appear unlike the “nice man” we know. Friedkin made Kinderman appear so confused just like everyone else when Karras flung himself from the window.