As for the end
portman character was lying/unreliable narrator. The clone was mimicking her every move. Every single one. But the moment she hands it a grenade it suddenly stops mimicking her and just stands there until the grenade goes off? The fact is she just watched a video of her husband killing himself the same way.
She also absorbed the tattoo of the other character. So she was the clone with spliced DNA of some of the other squad,in my opinion.
She also absorbed the tattoo of the other character. So she was the clone with spliced DNA of some of the other squad,in my opinion.