According to the article, one defendant settled and two defaulted. The defendant who settled can't appeal; the ones who defaulted can appeal only on very narrow grounds (e.g., that they shouldn't have been held in default because they weren't properly notified of the suit). A default (if found by the court to have been proper) is, by definition, a waiver of the right to contest the suit.
Again...Nethercott was in jail and therefore could not afford to respond to the suit. You don't get appointed an attorney in a civil suit.