Kayfenok
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A similar situation occurs with Faidan in the "Healing Isabel" scene (the 4th mission of Zehir's campaign in the original Heroes of Might and Magic V). In AllCampaignMode.h5u for Heroes of Might and Magic V: Tribes of the East, there's a similar bug. Also, something seems to be wrong with Shadia's model.
There's been some progress with this scene. It seems I downloaded the archive with the campaigns from a different source; in my version, this scene works correctly. I compared it to your version, and I have more files in the Bin folder, specifically in the Skeleton and Geometries folders. In the Characters folder, Shadia's textures were missing, which is why she looks so terrible; I've already taken the texture from your NVS_RestylingHeroes mod.
I couldn't upload it here, so here's a link to Yandex: https://disk.yandex.ru/d/_A_VObkJh1V4Jg. Please put the files into the mod.