I'm actually curious just what Sheena's legal status is. Obviously, her comic appearances from the Golden Age are in the public domain and Fiction House itself doesn't seem to have sold the trademarks or rights to any of their characters.
BUT...
There was a first-run syndication series staring Irish McCalla in 1955. That ran for 26 episodes.
There was the... interesting 1984 Columbia Pictures film staring Tanya Roberts.
And there was the Columbia/TriStar/Heart Entertainment syndicated TV series in 2000 staring Gena Lee Nolin. It ran for 35 episodes.
Apparently, a writer/producer named Paul Aratow owned either Sheena or Sheena's media rights in the 70s/80s and he was a producer on the '84 movie. He sued Columbia over the 2000 tv series saying he had first right to develop a series based on the property but lost because he signed the tv/film adaption rights over to Columbia.
I've read that T.T. Scott, the former president of Fiction House, sold the rights (to Aratow, maybe?) in the 70s but it is unclear if he actually HAD the rights to sell in the first place since the comics were, by then, in the public domain. Columbia had intended to develop a film in the 70s (staring Raquel Welch, I believe) but Jerry Iger chimed in claiming HE owned the rights. That delayed the film to '84.
A company called London Night Studios did a Sheena revival comic in 1998. She was featured in, I think, 8 issues.
Devil's Due, of course, did a Sheena revival that was all digital and you can buy those issues on ComiXology, I think. It looks like it ran ten issues.
So... based on all this, I'd say Columbia certainly holds Sheena's movie and tv rights but no one owns the character for comic or book publishing.