Thank you all for your input! Hunny, I followed your advice and found your suggestions very helpful. I think you are right -- I should have asked them before writing them on the map. It does seem a bit rude in retrospect to be just sharing information about "another person" without asking them if it's okay.

I did end up apologizing to them, and I redrew the map in an attempt to make it better. It seems like there is one in particular that doesn't want her identity known. I drew a box for her (like we did for all the other parts) and drew lines connecting her to everyone else, but I left her name out of the box, so it is blank. I don't know if this will have made things better, but I wasn't sure if I should have just left her off completely because it seems like then I would be just ignoring her and she generally doesn't like that. I was kind of hoping she or someone else would say something about that but I haven't heard anything so I don't know how she feels about it.

I have heard from a few of the parts, but one of them is completely silent except to tell me that I ruined everything. She is the one that doesn't really want her identity written.