"Hmm, well-- I'm thinking that if someone wants to attack her, and you or Zenkichi can talk the other person out of trying to do that... I think it'd give her less reason to rely solely on Maruki. Since the problem right now is that she can only feel safe with him, right?"

Plus, Zenkichi caused the problem in the first place...

"If she sees you two stopping any violence from happening, even if you guys are doing it self-servingly since you made a deal - that ought to make her at least assume she isn't about to be ambushed at every waking moment. So maybe she would stop hiding away in Maruki's Palace and other people can talk to her?"