I mean it is unlikely there is a fully done scene lying around and blocked. I think they simply never really added it. They should - especially since the scene you get when moving from act II to III is just heavily implying that there should be one.
I know I thought I bugged it out somehow and that I'm not alone with that assumption. I honestly tried loading earlier saves, trying to talk to her later, thinking the Act III intro might somehow mess with it and block it, until I gave up and searched for confirmation wether it was just bugged or supposed to be that way. There isnt even a fade to black or anything, which made it feel like simply not triggering properly.
I wish I could say I hope they implement something, but looking at the buggy mess that everything regarding Minthara and for how long she's been in this state, I have to admit I feel pessimistic about it.
However, I am not that pessimistic about her getting major bugfixes overall - just not a scene that they apparently never really made.
Happy New Year!
