Source of Powers: extremely athletic and highly trained.
Knowledge and skills: Superb businesswoman, highly skilled martial artist, trained as an astronaut, top secret security clearance. She can pilot jet planes, is adept at maneuvering in zero gravity, and a skilled scuba diver. Has training in ballet and gymnastics.
Weapons and Gadgets:
History: In E Man #5 (Nov. 1974), her sole comic book adventure, Caroline beats a macho mafiosa who's intent on moving in on her business, knocks out a Soviet double-agent trying to infiltrate an American space mission to Skylab III, takes his place, and generally looks fabulous doing it. She warns the Skylab crew that they are about to be invaded by Space Pirates.
In her first live appearance on the 5EP site, Liberty Belle was cowardly murdered while standing in a line of prisoners, and her sister Candy took over the role
(Partial) list of 5EP appearances: (links)
E-Man#5 (Nov. 1973) (scroll down and click on the panel of the astronaut shooting at Liberty Belle)
DC Universe: Crisis on Infinite Earths: The Villain War, Chapter 11: Executions (shows her cowardly murder)
Sentinels of Justice: The Calm Before the Storm, Chapter 2: Nightshade (shows her funeral)
All these links are for stories in which her sister, Candy Dean, appeared
Sentinels of Justice: Superpowers
Sentinels of Justice: Duplicity
Sentinels of Justice: Atomic Nightmare
Sentinels of Justice: Invaded by Magic
Sentinels of Justice: Panic and the Pantheon
Sentinels of Justice: Another Crisis on Earth-Four
Sentinels of Justice: Cold War, Secret War! (1988)
Thunderbolt: Rebirth (1988)
Queens of Evil (1988)