Rewatching the Wrong Jedi arc is very painful and I don't do it often, but what I do sometimes is skip all the scenes that are from Ahsoka's pov and watch the other ones, and huh, OH BOY does she look guilty. And what's the alternative here? Sticking by her because 'she's one of them'? The real culprit is Barriss, who is also a young member of their Order who should have been above any suspicion.
The scene where the Council tells her she can come back is super awkward and it feels wrong and they look terrible, but it's because the arc is from Ahsoka's pov. We experienced her distress and her feelings of abandonment and betrayal, of course they feel like massive hypocrites. But watching it from their pov only? She couldn't have looked guiltier if she tried.
(And the 'I know my loved one is innocent and I will defend them NO MATTER THE EVIDENCE' attitude is literally what RotS frames as THE WORST POSSIBLE STANCE TO ADOPT, really.)