I assume she is the daughter of John Wesley Corbin and Helen Marie Corbin, both of whom are now dead although John only died in 2014. This is from a 1950 federal census record on Ancestry which also shows 3 siblings (I assume the other 3 were born subsequently as her mother was only 26 in 1950). There seems very little trace in records and the obituary of her brother John Wesley Jr at
https://www.legacy.com/us/obituaries/theledger/name/john-corbin-obituary?id=24572236 mentions the other siblings from the 1950 census but not Phyllis. However, the obituary of her brother Michael at
Michael Corbin Obituary from 2019 does list her as predeceasing him. It does seem as though her memory has been somewhat lost, although it is good to know some relatives remain interested. With both parents and all but one sibling now deceased perhaps this is one reason.
I had previously overlooked that the Good Shepherd Home was part of the worldwide Magdalene homes which were at the centre of the huge scandal surrounding the Irish Catholic church, which lasted into the 1990s and which effectively destroyed the influence of the Catholic Church in Ireland when the truth emerged. If the St Louis home was even slightly similar to those in Ireland it would have been entirely sensible to run away.
