Tell her to be very mercenary about looking for work. Good schools need good teachers and she deserves to be at one and they deserve her. Students by the time they reach Jr High are beyond any ability to affect their character to become better people, so there is no hope from them if they come from bad backgrounds. A year or two lost in income is worth it to end up at a school you can do your job at without worrying about being beaten by an unruly student.