Drusilla, played by Debra Winger, first appeared in the Feminum Mystique parts one and two during season one.

She was sent to America by their mother, the Queen(Carolyn Jones), to tell Diana that she was to return to Paradise Island and cease being Wonder Woman. While waiting in Diana's apartment for her to get home, Drusilla discovers ice cream. It's ice cream along with the other facets of teen life which make Drusilla consent to stay a few days so Diana can show her the reasons she needs to remain in Washington D.C. as Wonder Woman.

Her arrival coincides with some Nazi sabotage led by Captain Radl(John Saxon) which Diana stops as Wonder Woman. Their new goal becomes taking Wonder Woman prisoner so they can learn her secrets.

While she is being taken around Washington D.C. by General Blankenship, their car is pulled over and he gets kidnapped.

After trying to find help, Drusilla goes after the General herself. Visuallizing how Diana transforms into Wonder Woman, and spinning with the grace of a drunken gazelle, she changes into Wonder Girl.

Superpowered, but naive, she runs right into a trap that was set for her big sister and gets knocked out by chloroform. While in Nazi custody, Wonder Girl is tricked by Peter Knight, a Nazi double agent, and gives up the coordinates for Paradise Island.

Paradise Island, now overrun with Nazis, can only be liberated by America's most powerful female team: the Bush twins. I mean Wonder Woman and Wonder Girl.

After one more apperance in the episode Wonder Woman in Hollywood, Drusilla was never to be seen again. Or was she...

In Infinite Crisis #6, we see Drusilla kicking Per Degaton's butt on Earth-462 as the Cathy Lee Crosby version of Wonder Woman fights in the foreground.