Nightveil

She started out as Phantom Lady - Sandra Knight, the same as the Quality comics character now published by DC thought to have fallen into the public domain.
However DC didn't think so and threatened to sue whereas AC ret-conned the character into Blue Bulleteer - Laura Wright, and later to Nightveil. It turned out that she indeed is a public domains character, and AC has published many reprints with Phantom Lady.

Origin

Laura Wright was born on December 4, 1920, She began her crimefighting as the masked Blue Bulleteer using a pair of revolvers as her main weapon.

In the 1960's she became the pupil of the wizard Azagoth. He took her to another dimension called Limbo for her magic training. She later reappeared on earth as Nightveil, with her youth regained and ready to fight crime again.

Her powers (teleportation, levitation, retrocognition,  ... ) are connected to her Cloak of Darkness, an inherently evil magical artifact. While she is arguably among the most powerful persons in her world, Laura has to constantly keep  the evil influence of her Cloak in check. She is at times insecure at her own ability to do so or whether the Cloak has already corrupted her. She is often brooding and the rest of Femforce has difficulties in understanding why. She spends much of her time in solitude in her sanctum, somewhere in the Everglades.

She is responsible for bringing Thunderfox, originally a fictionnal character, to life.

Laura seems to maintain the agility of her days as the Blue Bulleteer but now tends to avoid hand-in-hand combat. How much of her previous proficiency in it remains is uncertain.