Rizana was there in the first place as a victim of involuntary servitude, in effect, a slave.
The Saudis, and in fact much of the Muslim world, still use the system of bound and indentured servants, as a means to further their own personal needs. As slave holders, they can be, and frequently are, as bad or worse than the most terrible plantation masters ever among the Western nations.
Even the Romans had a much better view of slaves, offering at least some of them opportunity to be freed of their bonds upon meeting certain conditions.
Islamic tradition rarely or never allows the slave to go free.
She's free now. I really hope she was right with God.
Arabs imported slaves from Africa for centuries, maybe millions in total. However, unlike those brought to the Western Hemisphere they seem to have very few present day descendants... why is that, do you suppose?