What a creepy machine to get stuck with in the worst place you can imagine...
It is interesting, isn't it, that Schala would be a villain for allowing her morals to weaken her resolve in cases such as her choosing to continue drawing the Mammon Machine rather than let Crono & Co. be killed, which led her to commit actions with horrible consequences such as the destruction of her entire kingdom, except that, had she refused to draw the machine, Crono would have been killed and thus Lavos would have awoken without anyone to stop it, which would mean Schala did good in the end. But if it had been anyone else other than Crono, she could have refused to draw the machine at the expense of those other adventuerers' lives, thus sparing her kingdom if not necessarily herself, while Crono & Co., enjoying immunity from space-time editing, could have gone on to defeat Lavos even though their timelines might have become radically different.