I don't think it is a secret that the Zahau's have implied that AS was involved many times...even it they did not call him by name.
Mary Zahau said the day that Rebecca was found, "I will never believe my sister took her own life". I think she is in denial and wants to blame anyone but Rebecca.
As for "people thinking Rebecca got what she deserved", I don't see that at all. I don't see anyone "hating" on Rebecca. What they are hating on are the accusations that the Romanos or Shacknais were involved in Rebecca's death when that is far from the truth. I have been appalled by some of the things written on sites about these families who are grieving a great loss, and were ALSO traumatized by Rebecca's suicide in the midst of their crisis.
I don't see ANYONE being happy or relieved that Rebecca hung herself instead of facing whatever consequences would come from Max's accident..whether that was a break-up with Jonah or more questioning from CPS and detectives. Rebecca's death did nothing for anyone. IMO, everyone involved wishes she were still alive - that she would have picked up the phone that night and called Mary back, or called Jonah, or a friend, or go down and wake up AS and talk to him.
Suicide does nothing but leave more questions for those left behind. I think what she did that night was tragic. But that was her choice, and it was one that took none of those that loved her into consideration. Suicide is a selfish act. But that is not a reason to hate Rebecca Zahau. Nor is it a reason for the Zahaus and others to blame the Shacknais and Romanos for her death.