"Margaret Johnston" was an Australian-born British actress. Johnston was best known for her stage performances, but also appeared in 12 films and a handful of TV productions before retiring from acting in 1968 to devote herself to running a Talent agent/theatrical agency.

More Margaret Johnston on Wikipedia.

We've already seen two patients from South Dakota in the past two weeks. We were stunned.

There is no one I have ever known who personified more the loving, caring universal mother figure. She was always studying nutrition, child care issues ... and constantly looked for ways to better her care of either her own children or the ones she sat for.

To my delight, instead of the usual unkempt, gum-chewing, tobacco-scented, tired and bored woman in a bad part of town, I was greeted by a lovely, clean, organized and educated lady with a deep and true love of children.

Personally I am haunted by the irony that someone like Sheila, whose message to the world was all about nurturing, could have a child who would shoot her.