My Mum said something along the same lines too, but rather from her perspective. It was something along the lines of 'I (Mum) have made a lot of sacrifices, care and love to get you (Me) to where you are in life, and it's a waste of your head space to be worrying for someone who cannot treat your (my) life with at least as much love and respect.' She may sound a little selfish, but I think she has a point.
You know Ann, some things add value and happiness and enrichment to our lives … and some things keep taking it away. “Detachment” all boils down to deciding where you want to invest.
