In 2011 Hollie also stepped up to the senior level representing Britain at the IPC Athletics World Championships where she won the bronze medal in the F46 javelin.
Yn 2011, symudodd Hollie ymlaen at y lefel uwch i gynrychioli Prydain ym Mhencampwriaethau IPC Athletau'r Byd, lle enillodd y fedal efydd ar gyfer y waywffon F46.