She sounds worried
From a recent tweet:
"This is harassment pure and simple. This ‘inquiry’ by NYC democrats is 100% motivated by politics, publicity and rage. They know very well that there’s nothing here and that there was no tax benefit whatsoever. These politicians are simply ruthless."
https://twitter.com/IvankaTrump/status/1329604733712134147
You never see Ivanka lash out like this so she must be worried and has something to hide.