I remember seeing just how much faster she was and then learning her boyfriend was an Olympic Powerlifter - that was case closed for me
She improved by an awful lot once she started dating Obadele Thompson the sprinter from the Barbados.
Not quite like FloJo or Jackie Joyner Kersee, but enough that the idea she was clean was folly.
IIRC the blood samples from all the sprinters in the ‘88 Johnson DQ race were tested years later using new technology and they all tested positive.