Victorian police want to bring the 54-year-old, who was arrested in Israel in February, back to Australia to face 74 charges of child sexual abuse.

One of Ms Leifer's alleged victims, Dassi Erlich, posted on her Facebook page that "Malka Leifer is to remain arrested and has not been granted bail" after the Supreme Court accepted the appeal.

"The Supreme Court's ruling to keep Malka Leifer detained until the conclusion of extradition, is a positive step forward," she said in a media statement.

"It addresses the concern of many that she is a flight risk and a possible danger to others. This ruling will also hopefully limit the stalling tactics of the defence because their client is now siting in prison awaiting a decision for extradition.

"We feel strengthened and encouraged by this successful appeal and await the next step in this lengthy road towards justice."

Manny Waks, an advocate for Kol v'Oz, a Jewish organisation combating child sex abuse, said justice had prevailed and "sanity has been restored to both Malka Leifer and the Israeli judicial system".

"Now that she is incarcerated, hopefully the extradition process will be swift, and we can finally see Leifer face justice in Australia," he said in a statement on Monday.

"Today is a great day for many people, not least Leifer's courageous alleged victims."

Her extradition is the subject of a separate court case.