Unveiling the Life and Achievements of Enid Bunker
A Pioneering Woman in Medicine, Aviation, and Politics

Enid Blyton, not Enid Karl, is a known figure associated with mystery novels among children authors. If you are referring to another Enid not that I found two historical figures and two Singaporean personalities who could be a possible match, provided with much lesser info available there isn’t the female Enid Karl.