What exactly do you mean, just the missing animation or that it is not triggered by the dialog / the correct answers are missing?
Is nothing happening or are any heights incorrect? (we can't do anything about this, as the avatar heights are not queried by the engine during the animations)
If everything was answered correctly ingame, this should not be a problem.
It could be due to the engine, in which case a reload is required, or to the installation,
in which case a Steam repair could help, for example.
Which version of Enderal are you using, the Enderal(classic) or the Enderal Special Edition?
Where does the installation come from, Steam, GOG or something from Nexus Mods?
Are you using any other additional mods for Enderal?
Just upload here your savegame from before the scene in question here in the forum. (under "Dateianhänge"/File attachments )
A save always consists of 2 files, an ESS and an same named SKSE file, it is best to pack both in an archive such as Zip; Raw or 7z,
otherwise the SKSE file will not be allowed by the forum.