Mother's hope.
Drew's mini story on Senya.
http://www.swtor.com/info/news/blog/20161117
Senya raised her weapon, only to have it wrenched effortlessly from her hands by the Force. The pike sailed ten meters through the air and into Vaylin's waiting grasp.She could crush my skull in an instant, Senya realized. And I'd be powerless to stop her!
She can't defeat me in hand-to-hand combat, but she could still kill me anytime she likes. She's been toying with me this whole time.
Chained Vaylin, could break through her force defenses easily.