iclyn probably either doesn't exactly understand what a mercenary or thinks that it's the COOLEST THING EVER. randellia is suspicious of milne originally but understands that she didn't have much of a choice to do anything else.
zinc and handy straight up do not give a shit. milne has made it clear to them that since they're giving her a home, she's basically their guard dog for the place and she has no intent on harming them