Maybe Stellar(If she goes back to the EAF) will probably kill Rey or lunamaria. Though Shinn could have stoped her but didn't want to hurt her so he just stays put seriously confused watching her kill one of them, or both.

Also I think that now that shinn killed Auel. He might kill Sting, since he doesn't hesitate to kill anyone. Then Stellar will remember them both and become enraged with Shinn, making her goal to kill him. Or at least when she is back in the EAF, they erase her memory of Shinn cept the memory that he was the one who killed Auel and Sting.