While the shield was indestructible, Kelsey wasn't, and the shock from the blows inflicted terrible injuries; she died en route to receiving medical attention.

[volume & issue needed] Kelsey awoke to find herself in a ring of standing stones, where she was met by a vision of Brian Braddock (Captain Britain), currently ruling Otherworld, and his wife, the elemental shapeshifter Meggan.

Instantly, she was transformed into the new Captain Britain, only to discover that her decision meant that if she ever revealed who she was to her children, it would cost their lives.

[volume & issue needed] The new Captain Britain returned to Earth, where she helped the Avengers defeat Morgan and her cronies, proving herself to be far more ruthless in battle than her predecessor, using lethal force against Thunderball (soon after revealed to be Moran’s Black Knight in disguise) when she impaled him on her blade.

With her children now in the Avengers' care, Kelsey accepted an offer to join the team, so that even if she could not be reunited with them, she could remain close and in their lives.

When She-Hulk went crazy after an attack by Ultron robots, Kelsey stepped up, once again putting herself in the path of danger to rescue the fallen Captain America.

[volume & issue needed] Going under the codename of Lionheart, Kelsey seeks revenge and blames Captain Britain for what happened to her; for not warning her of the consequences of choosing the Sword of Might and for losing her children.

She joins forces with Excalibur and helps defeat Albion and his Shadow Captains, restoring Britain to its former state.

[volume & issue needed] Lionheart possesses super strength, speed, stamina, reflexes and reactions, endurance, senses, and flight.