Ivanka’s message ended simply, “Rest in Peace, Amalija.”

The Trumps did not reveal the cause of Knavs' death, who was 78 when she passed.

Amalija Knavs was a strong woman who always carried herself with grace, warmth, and dignity.

Ivanka Trump looking serious

She was entirely devoted to her husband, daughters, grandson, and son-in-law.

We will miss her beyond measure and continue to honor and love her legacy."

Left: Amalija Knavs, Donald and Melania Trump smile side by side, Right: Melania and Ivanka stand side by side, looking separate directions