Venus does in fact teleport right next to Nill, and if having strange powers has taught her anything, it's that startling a telepath is not a good idea. They're on the more difficult side to actually startle, so when Venus appears out of nowhere right beside her Nill nearly jumps out of her skin.

Thankfully she isn't running on enough instinct that she tries to actually hurt Venus. Nill jumps back, the knife in her hand raised, defensive but ready to actually be used if she needs to. It isn't until she actually realizes who it is that some of the tension leaks out of her shoulders, though not entirely.

If they both wake up alive in the Capitol after this they're gonna need to have a talk about your teleporting, Venus.