Searching for Decendents of Vera Ryan Mcdonald

Looking for any descendants of Vera/Alvera Ryan born Launceston Tasmania 29 July 1897 to Maud Ryan,(known as Dora Maud Ryan) father unknown. Dora married Robert McDonald in 1908 and moved to Bendigo. Vera/Alvera was known to have worked at Ball & Welch in Melbourne in the early days. Vera/Alvera had a younger sister Raymer Alfrieda McDonald who is 98yrs and would dearly love to find out about her family. Vera/Alvera would have bee 20yrs when Raymer was born.