She holds the screen up to his face on the maquette she had Arthur make her, deletes the footage, and requests the archives send her the original film from that infamous day in 1989, so she can destroy the last bit of evidence once and for all.

Source: https://collider.com/poker-face-episode-8-ending-explained/

The maquette is not the only one out on public display, as another was installed at the Sculpture Garden of the National Gallery in Canberra, Australia in 2010.

Source: https://www.chroniclelive.co.uk/news/north-east-news/angel-of-the-north-netherlands-27575912