BM excellent response. Like someone already mentioned giving them no reason or information drives them crazy.
When I confronted the two elders I caught stalking out my place, one of them literally begged me for my reasons of why I no longer attend. He just had to know! When he saw he couldnt get an answer it fustrated the hell out of him.
They need you to say something so they can incriminate you and hang you with your own words.
You handled yourself well in not giving your nosey cousin any info. Of course they're gonna make up stuff anyway but you knew that already. Stick to your guns! We got your back as well!
Lost-wun