The End of Evangelion and is that the reakl asuka? please help

Ive been watching videos explaining the ending of evangelion to get a better grasp on it. I understood what was going on when I finished the show and movie but wanted a deeper explanation. One thing I'm not getting however is when shinji wakes up asuka is there next to him. From what I understand its because her and shinji both did not accept the human instrumantality and becoming one with everyone. But I thought asuka died when the other evas ripped apart unit 02. Just curious if maybe her plug got ejected and that just isnt shown or am I missing something.

If it has something to do with the rebuilds however please just dont spoil those. Im in the process of watching them