I've noticed this for some time but I think I should point it out. If you use "did" to support the action after, the verb must be in its base form. Like so, it should be written as "Naomi, did you just manipulate us?" I'm no English geek but I hope this helps :)
"Naomi, did you just manipulated us? Everything was planned by you, is that correct? Is it fun manipulating us? We are your friends, not your pawns!" Nike stated, moving closer to Naomi and pulling her by her collar.
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