I’ve always taken it that he calls her that because she’s a cooperating witness.
yes, that was inference. But when he does the same thing with Nellie (Nelly?) Ohr - that can’t be - unless Nellie (Nelly?) is cooperating, too - possible, but would surprise me. Of course in the realm of disinformation it’s probably good for DS to believe they’re “cooperating” even if not ;)
Okay.