Lighten up, John. Maybe it's not your thing, but it might be just what your mam needs. It's a night out with friends and some music she likes and it's a good way to get exercise, so what's the harm?

I don't like line dancing much either, but if somebody wants to do it, that's OK.

And as for you keeping her from doing stupid things, unless you think she did a lousy job of raising you (and you seem to think you have good sense), maybe you should trust her a bit and let her have her fun.

cheers,

david