VBAC and C/S both have their pro's and con's (I've had one of each) but I really don't understand why people have these misconceived ideas that a c/s is easy. Sure you don't have all those hours of labour to contend with but it's major surgery and recovery takes much longer.

'Easy' and 'birth' don't go together as words.... either way is bloomin hard work.

I would politely ask your sister to BUTT OUT - you don't need stress.

Good luck with it all.