I meant it in a "hey I bet you didn't know this" like how you would talk to a child.
Another thing is, if I word it as "everyone has nightmares" I felt that would be merely brushing off any concerns Yuma may have which is not what we want.
I admit, I may be banking on Kohaku not overreacting here, but if she starts freaking out at us for mentioning she has nightmares after everything she has been through I'll be shocked.
I get that what Kohaku and Yumi talk about is private, and it will stay that way. No where does it say anything about revealing anything other than Kohaku having nightmares.
I think I should bring up a different perspective.
Do you think that a normal person in their world, with knowledge about the existence of Demons, Gods, Magic, Aliens, Soul-Gems, Witches, etc. have no nightmares about what they face?
It's acknowledging that the bullshit that is going on scares people, scares the people Yumi cares about. It scares Yumi about the possibility of a single failure costing her the lives of the people who rely upon her.