Goda Haig
May have moved to Australia and married Humphry Firkins. Goda Firkins of Coomera, Queensland has the same birth date and first name of Goda. This has now been confirmed by her third son Michael.
Information below from: http://www.victorianwars.com/viewtopic.php?f=82&t=2078&start=15 accessed 13th March 2011
http://austcemindex.com/inscription.php?id=5835930
Goda and her husband Humphrey are possibly the couple mentioned in this school newsletter, which suggests a hall was named in Goda's honour some years ago - and Mr Firkins seems still to be around as Chairman of the Goda Foundation:
http://www.saintstephenscollege.net.au/ ... 6Mar10.pdf
I'm pretty sure Rollo's sister died in Blyth, Suffolk in 1965. At least Ancestry has a "Gundred I W De H H Scott-Moncrieff", who died aged 73 in that year, which sounds about right.
Timeline
Death of Mother, Valerie Hudson
Death of Father, Rollo Haig