The Amish are good, solid, conservative people, however their extreme lifestyle is not Biblically mandated. As mentioned they do have the same problems and temptations we all have.
Yeah, she succumbed to temptation...
http://www.eonline.com/uberblog/b172328_who_jesse_james_alleged_other_woman.html
Raised Amish...Looks like not only she fell off the tree, but the planet for tha matter...