Sharon was said to have been snapped away like billions of other souls, which would mean that she’s only just recently returned.
But, from her set up in Madripoor, it looks like she’s been large and in charge for quite some time.
For someone like Sharon to go from being very good and holding on to doing what’s right even if it causes her trouble, to being a woman who doesn’t believe in heroes and maybe wants the freedom / chaos of the blip times back would make for an awesome villain arc, no?
What if going on the run really ruined her, and she faked her blipping, so that she could begin her criminal enterprises and then set herself up on the nearly lawless island once everyone returned?