Hi Joan.
Good news. There's a tree on Ancestry (compiled by a descendant of John Kelly Corris b 1874 ) which states that Alice May Corris b 1878 died in 1975 age 97 in Brisbane. There's no information in the "spouse or children box" so it looks as though AMC may have been a spinster when she died. There's no indication as to how the tree compiler acquired the death info, and no other obvious family member who emigrated to Australia, although I haven't looked carefully.
There are no children listed for Elizabeth A Corris or a husband's name, although the compiler does know that she died in Jan 1891.
Jean C