The 70-year-old also commended Eric’s advocacy after he opened up about his diagnosis last April.

“Eric bravely shared his ALS diagnosis with the world over this past year,” she reflected. “He advocated for increased research and showed up in every way he could to focus our attention on this devastating neurological disease.”

After the Euphoria actor’s death at 53, Maria—mom to kids Katherine Schwarzenegger, 36, Christina Schwarzenegger, 33, Patrick Schwarzenegger, 32, and Christopher Schwarzenegger, 28, with ex Arnold Schwarzenegger—promised her publishing company would do his story justice in the memoir.

“Godspeed, Eric,” she wrote in her Feb. 19 Instagram tribute. “It was an honor to know you, and we will honor your story.”