The Second Tiberium War is a standalone redefinition modification for Command & Conquer: Tiberian Sun.
Khetana is a mutant woman born and raised in Siberia, Russia. Uniquely as a mutant she has no visual imperfections but has all the benefits when exposed to Tiberium. Once the brotherhood found out about her unique traits she was abducted and used for development of Kane's "Genesis" project.
Joseph Shepard knew Khetana while researching ancient ruins for GDI in Siberia. After her abduction Joseph went AWOL searching for her and was declared renegade.
of course, the obvious hot dame goes to NOD and is a fanatic follower of Kane.
You need to play the campaign and see what happens...
What a redhead beauty, nice. Does she play like the commando, sniping and using C4s?
She uses a high damage pulse weapon and is effective against all units and aircraft, she can also stealth and regenerate in Tiberium.
She doesn't look like a mutant...
It explains why in the description.