One of the first things you're taught, as an assassin? Is how to sense presences. Knowing where everything is in relation to you is Important. As anyone or thing can make a difference between life, death, success, or failure.

Top this off with the natural paranoia a Sith's lifestyle provides in the old Empire, well.

She slows. There's little she can do to mask her presence in this case, hood up, scarf wrapped around the lower half of her face. Flight goggles repurposed to protect her eyes from the snow. Black robes, heavy boots. But she can slow down. Control the situation, rather than give in to fear of the unknown.

The weather, the noise, the wind, and the Nexus in general makes it difficult to tell where whatever it is that's evidently stalking her is. A hand goes to her lightsaber as she continues--not activating it yet, as she's unsure of how well whatever's stalking her can see.

And a bright red glowing blade would do little to hide her presence, not that she's too difficult to spot, what with all black heavy edgelord Sith robes and all.