I'm with feldar; there's a lot of anectodal evidence that they are unlikely to do it again, so if she's a favourite and you want to give her a chance, then do - but keep a watchful eye, of course.
Commercial folks (which includes us) will mostly take the money for the cast ewe this year and spend it on a replacement. There's enough things a ewe can think of to cause herself - and you - some problems, without giving her a head start!