Prison Tower door 4

I could be wrong but I think it was implied that Jeanne forced her way into the tower. She wasn’t really supposed to be the avatar of wrath. I think that’s why Dantes was so angry. Could be wrong though.
Edit: After watching the interaction again, it seems like Jeanne was supposed to be the avatar of wrath but I think the real Jeanne forced her way in instead of just a remeant of her going like the previous three avatars. This caused her to act like her normal self instead of being crazy like the others.

Maybe, just maybe

A: it's Jeanne role
B: yep, no objection
A: but...
B: .... what?
A: how about we take her ruler form? Since we must at least make dante useful besides smashing zerker, right?
B: hmmm... nice idea. On it!

Then.... this happend

This may be a cop out but I thought the “wrath” in that encounter was Dantes himself. All the previous Servants were already nuts or in Fergus’s case having a weakness exploited (ie being so horny even Medb can’t keep up). Jeanne however is the first that refuses to play along, and that seems to enrage Dantes. He assumed that she must harbor some hate for what was done to her, and when he found it she does not, it stood out in stark contrast to his own decisions. She is literally his polar opposite. I am guessing he is the one that brought you here, maybe to prove a point that humanity is not worth saving, and yet Jeanne made a strong case otherwise. Could be wrong however, I didn’t play the original event, and am just guessing based on what we’ve seen so far.