I expect she did win, though, and UPES is just acting on inside information. If they weren't sure, why would they put Sahrawis and Haidar at risk for embarassment? Haidar would be a great choice, anyway. From the Memorial's description of the award:
Emphasis mine. Winning would mean not only better attention for Haidar and Sahrawi human rights, but another third party interested in protecting Haidar from Moroccan attacks.
The Robert F. Kennedy Human Rights Award was established in 1984 by his eldest child, Kathleen Kennedy Townsend, to honor courageous and innovative individuals striving for social justice throughout the world. Each year, the Memorial awards an individual whose courageous activism is at the heart of the human rights movement and in the spirit of Robert F. Kennedy’s vision and legacy. The Human Rights Award winners or "Laureates" have made significant contributions to their countries through years of dedicated work....The Memorial offers not only a monetary contribution to their cause, but a partnership, through RFK Center, in the fight against human rights violations.
Via anonymous commenter