Almost certainly the latter, the team got worse this year and there have been all sorts of behind the scenes issues there. Multiple player have just suddenly left the team during her tenure and there's been allegations of abuse. If she wasn't at a school where women's basketball is still a complete afterthought it would have been a bigger story and I'm not sure she'd have made it through the season
Williams is awesome but I would be surprised if Iowa adds a front court player of that caliber now that Heiden has started to emerge. Williams is going to want to start and Jan obviously isn't going to be bench Stuelke. Someone is going to get a good one if she enters though. Iowa should be prioritizing a combo guard in the same mold as Lucy and a tweener forward who can play 3 or 4 in small ball lineups over a true big, imo