She was the daughter of Sheikh al-Omara Mohammed al-Habib and married the crown prince in 1953.
The rebels had agreed that the crown prince and the prime minister should be killed, but there had been different opinions as what to do with the king, and no decisions at all in regard to the female members of the family.
During the transport, the cars stopped, and the bodies of the king and the crown prince were taken out; the former being hanged, the latter being defiled and dragged through the streets.
Hiyam was the only member of the family to survive, but exactly as to how and why this happened remains unclear.
In the confusion after the initial shooting she was apparently protected by some soldiers from her family tribe.