yes, the Mennonites are more liberal than the Amish, but then again there are Amish which are more liberal than others. The Old Order Amish are the most conservative ones, which do not use any electricity whatsoever. However, other Amish people may use electricity at work. I'm surprised to hear that this girl is banned (from whatever) by the Mennonites. E.g. the Amish christen their children at an adult age at which they are able to make up their minds on whether they want to be Amish or not. If they decide against a life as Amish they are, however, not banned. It would surprise me, if this was the case with the more liberal Mennonites.
Airbus A340-600 - the longest temptation in the sky