If you lay down with dogs you get fleas, simple as that. Jale may have been a relatively inoffensive HM, but you can't mix with bad people and not have their reputation rub off on you, rightly or wrongly. None of those four deserved to go, but one of them had to, and Jale mixing with that crowd was enough of a reason to get rid of her, as no one else really offered the public a good reason to evict them.