Or I would have said it is Japonica- C. japonica Until I looked at the Hort Flora key - only one with pink flowers is C. speciosa. But there are also differences in young shoots and leaves, so now these may be available to photograph as well. Good close ups needed.
Chaenomeles are not in ACT Plant Census, but Chaenomeles speciosa is in Advisory List of Alien Plants. I am not sure I agree, but Copilot AI summary: Practical takeaway for Canberra horticulture If you’re assessing ornamental quince for planting or weed‑mapping: Low, suckering, ground‑hugging plants → more likely C. japonica. Tall, dense, upright shrubs → more likely C. speciosa. Cultivars in nurseries are often hybrids, so expect intermediates.
I will check again; I took the photo of one of the 3 major garden extensions in Hackett which contains many different specimens - species - cultivars ...