The Bo Katan thing makes no sense. Sabine gave her the Dark Saber. The only thing I can think of is that there must have been some real fukkery that happened. Like when it was important to be united against the Empire, there were some bytch ass Mandalorians, who pointed out that she did win the Dark Saber from Maul. This disinformation campaign caused a whole lot of discord. It would be a twist if it was Din's sect of Mandalorians that was behind it. Some people have pointed out that the Armorer may be honoring Maul since she has spikes on her helmet. If that little rumor is true, then she would know for sure that the only one who defeated Maul in combat, was Darth Sidious. Even if that's not the case, they're hard core about following the ways of the true Mandalore. They would see Bo Katan as a fraud. So now she knows that she can't come back with that shyt, and not have won it in combat. She was probably going to have Sasha Banks film the fight, put it on the HoloNet, and let it go viral.