Barons of Steam - traitor

If we go by the general consensus that Frozz is not the traitor (by his sheer coolness and amazingness) that leaves Belquior Ansallour and Melandra Valor.

Frozz likes neither, but when asked why the barons didn't attend the execution of Tommen he says of Belquior:

"Belquior's been real annoyed at the folks complainin' 'bout his sewers. 'Eard there's some places that got backed-up or whatever? Even sent out requests to help clear 'em. It's a real maze down below, I tell ya. So if I had to guess, he just don't wanna get yelled at at a time he's supposed to be playin' hero, aye?"

#trine 03-06-25
To me this could mean that Belquior has a legitimate reason to not attend and that Melandra does not - making Melandra more suspect that Belquior

And if the man is so tender about his sewers, wouldn't it be weird if he allowed the bad guys to do something in them.