I didn't make any field note, i just photographed a pretty flower (and some dragonflies/damselflies, a snake and echidna) while birdwatching. I've changed 2 of the photos to show more stems. If these are not sufficient for ID, I'm happy to delete the post.
From what I can see of the stems, they are straight rather than twining, which increases the possibility that it is Thysanotus tuberosus. Thysanotus tuberosus has leaves, and its petals are 10-19 mm long, making the flower diameter up to about 40 mm. Thysanotus patersonii is leafless, and its petals are 5-11 mm long, making the flower diameter much smaller. Can you make a comment on either of those two,points? If you cannot, leave the sighting in. One of the other moderators may have been at Mulligans Flat recently.