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Warning: So manyTenetspoilers ahead.
Turns out he went with the latter option.
Unfortunately, those motivations can be boiled down to only one thing: her son.
Kat is obsessed with her son.
Kat is basically a Twitter bot who replies to everything with some non sequitur about her child.
At one point, John David Washingtons Protagonist says something like, Your son is cute.
She replies, Heseverything.
No, he replies solemnly.
She barely registers this before replying, quietly, … Kats strange, almost concerning single-mindedness about her son makes sense when considering the screenwriter.
What do women … like?
he must have thought, yanking at his starched collars.
He should write to her soon).
Suddenly, an epiphany: Women like … theirchildren!
Sator nearly shoots Kat in the head during a car chase.
And during one of the several temporal pincer missions (what have I done to deserve this?
Kat begins to bleed profusely, and the Protagonist is informed that she is on the brink of death.
In other words, inTenet,Nolan gets to have his dead-wife cake and eat it, too.
She is fine now.
So is her son.
(The punch line being that the doctor is a woman.
She cant operate on this boy, she shot him!!
Kat, the only woman still standing, wobbles alone in her heels on the cobblestone street.
