In real life, had Betty kept an attorney and followed court procedures, she very much could have had her say. Instead, Betty let her attorneys go, skipped hearings and violated numerous court orders. She engaged in actions against Dan that, at best, would be described as self-defeating. It wasn't that Dan could do whatever he wanted, it was that Betty apparently decided if she just ignored something (i.e. the divorce), it would go away, and when it came time for reality to intrude (i.e. the trial), Betty self-sabotaged again by going into the trial having no idea what she was doing.
My point was never that Betty should have been meek or a "good girl," it was that Betty repeatedly self-sabotaged. However, even with her own self-sabotage, she still ended up doing better than most people. So no, I don't feel badly for her on that score.