Mist eating swamp mahogany (eucalyptus robusta) one of the primary food trees. It has a really large leaf as you can see by the one draping over her arm. It's really glossy too in a way not many eucalypts are.
Thank you for all the well wishes for Greta in the comments yesterday and for putting her on the TP and PP. I will keep you updated as I believe she may be going up the coast to the vet today.
Beautiful capture.