In this case you are wrong.
Because Atsu scored anyway, TAA is supposed to be given a yellow card. The referee is not able to give a red card for denying a goalscoring opportunity because they scored. If Atsu sends the ball wide or it is saved, TAA is to be given a red card and a penalty awarded.
Specific rule per the FA website:
If the referee plays the advantage for an offence for which a caution / send off would have been issued had play been stopped, this caution / send off must be issued when the ball is next out of play, except for the denial of an obvious goal-scoring opportunity when the player is cautioned for unsporting behaviour.
Dumb rule. That makes no ****ing sense to me.