Natasha + Yelena
[ooc: after their exchange on the network]
This was an impossibility.
Her sister had died, and there was only one other person that Yelena knew of who knew the whistle - Barton, because apparently Natasha had shared it with him. But now there was someone on this island, someone who was using her sister's picture and name, who also knew the whistle.
As she made her way towards the lighthouse, Yelena readied her weapons and herself for the fight that had to come. Whoever was pretending to be Natasha was going to die for doing this. She was still a little ways off from the lighthouse when she spotted a figure - black tac suit, red hair pulled back into braids - and Yelena drew her gun and aimed it.