Her photo and resume: https://www.stuntbookaustralia.com.au/member-profile-details.php?sba_member=763

IMDB appears to be correct on this as I also reported Tara Macken, from The Hunger Games, is doubling for Mileena (early trailers do show Tara's face as she spins in mid-air in Mileena's fight with Sonya).