I’m afraid that’s mutually exclusive. If you are indeed on step 23 of the main plotline, you would have seen a Cheshire cat inside the boss room yet it’s empty. If you already defeated her, you would be on step 24th and the help tip will suggest you visiting Ayane in her forest shrine instead of chasing the witch.In fact the problem it's after having beating Cheshire, I did the training with Ayane but when I come back to island floating, I can't open the rift.
As you said I may have changed something that I shouldn't without paying attention.
I think I will create a new game.
Thx very much for your help
Ayane’s special training sequence is completely optional and doesn’t affect the main plot in any way. It has its own switches to determine if the sequence should activate and limiters to prevent it from happening more than once. Both of these check if the player progressed far enough in the main plot but don’t change the current step in it.
Making a clean save or getting one from a backup/this forum sounds like the safest bet to me. The only quick alternative I can think of is changing variable 138’s value to 24. This will mock up the state you should be after defeating the Chesire on the floating island.
Please note, Yorna uses several other checks for optional content along with the main plot step variable. Even if this will help you with getting back on track with the main quest, some extra content may be locked since I don’t have any idea of your changes via save editor.