"What reasons might I have for not wanting to do him favours? Is he terrible? Is the favour going to be terrible?"

"Yes," Sid says immediately. "I am an angel, and many are loathsome to me who you might not find objectionable, but it is a very commonly held belief that Preem Nand is one of the worst of this city's flesh-mongers."

"The devil whose counsel we seek is his wife, in addition to being his slave," he says after a moment. "This was the reason I heard most recently."

"In that case, maybe I'd better talk to her first. But if I can't figure out how to do that safely or reasonably, I will maybe have to go with Plan B: offer the guy a favour even though he sucks. So - how might I safely and reasonably find her?"

Sid looks off into the distance. "...can you climb a sheer brick wall," he asks eventually. "That seems to me relatively straightforward, as ways to enter her tower - and so probably there are countermeasures against it, but it is a place to start."

"...I probably can. Sure, let's start there."

Sid leads her to a tower and, without preamble, begins climbing the side of it. An advantage of climbing below an angel, as it turns out, is that he leaves handholds in the brickwork, fingerholes drilled an inch deep. A disadvantage is that this process involves a great deal of brick dust.

Yeah, this is doable. Just be very Barbarian Fairyland about it. And try not to breathe too much brick.