From her perch on the roof, Sheena can see what's happening--and knowing that Pepper once worked for the police in Keeliai--holds off on intervening.

Because she has a feeling the young woman is not only more than capable of dealing with the one following her, but knows he's there by the way she's acting.

So, very quietly and using the cover of the night, the ninja does her own following from above, keeping both parties in her line of vision while seeking for any others who might want to join the party.