She stood for election to public office. During the campaign she literally said that she would not have sex with her employees (referring obliquely to a scandal of her predecessor).

She fucked up.

We don't expect that. But we do expect someone who went to law school would have the brain to see the apparent conflicts, appearance problems, and not hire them to work on the most high profile case she will ever work on.

This wasn't a couple of teenage lovebirds who didn't know any better. These are two career lawyers who were playing shell games with money to hide an affair while bringing charges against one of the most powerful people in the country, with unlimited resources, and a decades-long track record of finding ways to exploit even the most irrelevant weakness he can find to get his way. This was poor judgement at best.

There is a suggestion of corruption. She might be funneling public money to her boyfriend but that should not really undermine the case against Trump.

Go back and watch their testimony at the hearing. Saying there is a "suggestion of corruption" is like saying "Trump may have told a fib or two in his time". They were playing all sorts of shell games with the money and doing everything they could to cover it up, which means they knew their behavior was improper at best. Every case they worked on together was tainted by their actions because their relationship and the actions they were taking at the very least give the appearance of impropriety, even if they didn't specifically do anything improper regarding the Trump case. And the appearance of impropriety is typically the standard for recusal.

She shouldn't have gotten involved with Wade in the first place while handling such an important case. But beyond that, as soon as the scandal broke, they should have at least tried to salvage the case by recusing themselves and handing the case off to someone else. And now, the fact that they didn't had the effect of giving Trump exactly what he wants, as the case is now going to be delayed at the very least (some estimates say the delay could take the case to as far as 2026) or outright dismissed if either the appelate court or Supreme court rules that she should have been removed.

And for the record, Trump case aside, I'm of the school of thought that she should be fired and/or disbarred just based on the relationship she had with Wade. And I think if she weren't caught up in such a high profile case, she would have been.