After the death of her husband in 2018, which woman became the president and sole resident of which "independent nation"?

The micronation of 'Akhzivland' was declared by Eli Avivi in 1971. It occupies an area that was once a Palestinian fishing village, but which was abandoned when it was conquered by Israel in 1948. It is located on the Mediterranean coast just north of the Israeli town of Nahariya near the Lebanese border. Avivi created the state in protest of Israeli government plans to demolish the dilapidated buildings he had taken residence in some two decades earlier.

Avivi led Achzivland along with his wife Rina until his death from pneumonia in 2018. They were the only two residents of the micronation. Though not gaining recognition from other nation states, Achzivland has its own economy, a National Museum, a flag, anthem, political system and foreign relations policy (albeit rather tongue-in-cheek in most of these respects). It attracts tourists, celebrities and has been branded a 'hippy' establishment. It is not clear what will happen to the micronation now, though his wife and sole-remaining resident has expressed her plans to preserve Achzivland as a permanent memorial to her late husband.

https://www.bbc.com/news/world-middle-east-44142794
https://www.bbc.com/news/magazine-31800580
https://en.wikipedia.org/wiki/Akhzivland