However, the dentist, doctors, and the teachers have all been sacked from their place of employment, and the dentist’s wife has been forcefully requested to resign from her tennis club and other social groups. And none were re-instated when the accusations turned out not to have any evidence supporting them.

The employers should be sued.

fuck the clubs,

should the wife (who is clearly a very damaged person) be sued for libel/damages for her accusations?

Yes. This will create a big paper trail so that any future victims of her slander have a defense. It might also force her to get treatment/committed