A Light in the Dark

The trailer concludes with a very exciting moment—a group of Jedi, including Sol, Yord, and Jecki, find themselves in a dark jungle, only to be confronted by a shocking sight: a crimson lightsaber spinning through the air, before it returns to a robed user’s hand. Of course we have seen red lightsabers aplenty, but it’s important to remember that this is a horrifically alien sight to the Jedi of this time period.
As for who’s wielding it, it’s hard to say. Could it be Mae? Is this her becoming further pushed down the path of the Dark Side? Is this why she’s murdering Jedi, acquiring kyber crystals to bleed?