It seems that at least in 1896 Catherine may have been living in Euroa ( Mrs P Power of Euroa)
www.trove.nla.gov.au Euroa Advertiser 31/7/1896. But could mean her mother was at Euroa.
BIRD.--On the 28th July, Margaret Bird,
widow of the late William Bird,
storekeeper, late of Landsborough
and Stawell, and beloved mother of
Mrs. P. Power, Euroa.
Also:20 Aug 1897 as above
my dear little son Willie, who died at
Footscray on the 27th March, 1890.
shume