The left-armer joins legspinner Georgia Wareham on the sidelines leaving the hosts needing further reinforcements
Molineux suffered the injury during the last week of the WBBL, and has been ruled out of the entire multi-format series.
Australian team doctor Pip Inge said Molineux is currently in a moon boot, but it’s hopeful the 23-year-old will be able to play in March’s ODI World Cup in New Zealand.
“Sophie’s focus now shifts to her rehabilitation plan which means she’ll be unavailable for any upcoming domestic matches as well as the Ashes in January,” Inge said. “At this stage we are aiming to have Sophie available for the ICC Women’s World Cup in New Zealand in March.”
This summer’s Ashes series comprises of one Test, three one-dayers, and three T20s. The Test match starts on January 27 at Manuka Oval in Canberra.
Molineux carried her injury into Melbourne Renegades’ Challenger final loss to the Adelaide Strikers late last month. She didn’t bat despite her team’s early collapse, and returned expensive figures of 0 for 22 from two overs with the ball. It was revealed during the match that Molineux had been in a moon boot in the lead-up to the clash.