@Sister I too had a similar experience with Breast Care Nurses and quite possibly at the same private hospital here in Adelaide. I really was barely aware at the time of the role with the exception of being given a bagfulof pamphlets and a Berlei bra but someone who had the title.
I have been astounded sinceto learn from a local support group of the wonderful ongoing support others have received from breast care nurses at a public hospital to the point that should I have a recurrence I would seriously reconsider where to have treatment.
This gap in support has been further demonstrated many times by what I have read on this blog .In fact I did not know what a McGrath nurse was when I joined this blog.I am doing fine now but there was a time when that support may have been a lifesaver .