I recently decided to try Lust Doll+ Extras, basically a collection of small mods for the game, and conveniently using that instead didn't have this issue. I'm gonna take a look at the files and see what's different.
ok so I looked at the files, and it seems that it's missing some of the files for the furry version of Bell. For a temporary fix you can switch her to her human version for this scene. I just tested it and that worked for me.