hm, there’s something to this.
imagine: elle has just killed Budd. in his last remaining painful moments, he suddenly sees the bride through a crack in the floor or wall or something. he is totally surprised (“i buried her alive!”) but then smiles and then immendiately dies. that smile can be interpretated as joy, knowing that Elle will get her ass kicked and probably even killed by Beatrix now.
i like it how it is, not saying my version would be better. but different.
That would kind of be cool, but might be hard to do without looking a little cheesy.