I haven't a clue if an acquaintance from the same charity had a motive to harm the victim or not. I don't think the term "that cosplay group" is a description of the parent organization or Liz's volunteer work of going to hospitals to entertain children. Many times on WS, it's been described as cosplay, which has other implications that don't apply to this situation.
There is a difference between volunteers that appear in strictly enforced copywrited patented gear to help charities raise money and cosplay groups that have private events or go to fairs/public events, that choose their own makeup and clothes, from different times and places and themes, and "act out", look and talk or however they want.
What information is there that this couple did a lot of socializing with other members of the organization, outside of appearances at events and the business of the parent organization? If they went to meetings, it wasn't for cosplay. They are not in the costumes outside of charity appearances, you can't drive, sit, eat, drink or see each others' faces. In Texas, I can't imagine how hot it gets in that gear.
Do you know of a cosplay group, so organized and controlled, that it only appears when an application is approved by the administration of a charity?
Do you know of a cosplay group that you have to apply to and be approved and have your costume be inspected?
moo
( I was following another vein; most internet discussions are regurgitating the same scenario. I am thinking: Liz had natural charm, and chewing on Sergio’s possible role has led us nowhere. Why not test the opposite hypothesis, that she was loved, and he, uninvolved? I am not totally walking away from the situation that has been discussed, either.)
Your post, though, is interesting. Liz’s father joined 501st legion after her murder. In the podcast, Mr. Nuelle explained the rigorousness of the costumes, the selection, the organization. It was new to me.
However: every fandom organization, be it a Roman legion, or Greek hoplytes, or Medieval jousters, anything uniting people deeply interested in the topic, is obligatory de rigueur. The participants make it such. Now I can imagine the tensions existing inside fandom communities. With Star Wars having so many fans, the 501 Legion charity is large, thus probably leading to more “politics”.
I see Liz as warm and diplomatic, perhaps achieving more than “by the book” handicraft can do. I might be wrong, but IMHO, Liz could organize and lead. Could any inner squabble be the motive for intense hatred in such a situation? Likely, but IMHO, the most obvious suspects in 501 would be ruled out by now.
We may need to turn to earlier times, because if I understood correctly, 501st legion was Sergio’s hobby, and Liz joined suit. The perpetrator could even be from pre-Sergio times, with another hobby and a social, charming woman raising the ire of someone too rigid.
The Nuelles used the word “the Sopranos” in the podcast. Meaning, it was not a mistaken identity, Liz was targeted, the assassination was very-well planned, and the planning must have taken time. (Plus, Liz did not know the killer.)
Strictly MOO: a Kaitlin Armstrong-type person, but smarter, gender unclear. Not necessarily someone from a prior relationship, but a person who can seethe with hatred. Very obsessive. Likely, not too social. With KA’s-type personality disorder and paranoia. A person who doesn’t let go, and is a planner. They could have hired an assassin, but the timing makes me think they were in the car. JMO: the anger was totally disproportionate to the situation. Likely, the person is great with time and never late.