Sandra Bridewell was a beautiful, charismatic socialite in the upper echelons of Dallas society. People were drawn to Sandra when they first met her, but they eventually began to feel uneasy around her. Especially when people started dying.
Sources:
The Meaning of Malice by John Leake
Sandra Bridewell is The Black Widow | D Magazine
Bridewell went from socialite to pariah
‘The Black Widow of Highland Park’ - People Newspapers
Sandra Bridewell | Photos | Murderpedia, the encyclopedia of murderers