While on bail, Urmuz returned to Romania but UK police continued to work with European law enforcement officers to bring her back.
Urmuz was jailed for six years for kidnap and exploitation, while Jean-Marinel was jailed for 10 years for modern slavery and exploitation.
They are both subject to indefinite restraining orders and face deportation on release.
GMP described the case as a “long and complex investigation”, with senior investigating officer Det Insp Tony Platten praising the victim for her “incredible strength”.
“She endured years of abuse and coercion by this group, forced to live in unimaginable conditions for so much of her life.”
Debi Lloyd, European programme manager from Justice and Care, said: “This case demonstrates both how widespread the issue of modern slavery is in our communities, but also the need for brilliant policing and survivor care to bring those responsible to justice.”
