It actually felt as though they realized that it would be impossible to introduce a new character for Jane to find and face down, so the writers decided to just use an already established character as the villain.
The performances are all adequate, nothing outstanding and nothing terribly deficient. Certainly they’re far more credible than the plot to which they are attached. The slime and mud that oozes from virtually every character and in which they find themselves entangled is palpable, but completely expected.
It’s a sad little jungle that the folks at Painkiller Jane built for themselves and their characters. The trees are sparse, the vines are short, and the mud is in carefully orchestrated, well marked places. If only they’d made it a little more substantial maybe Tarzan could have come along and saved the picture.