The NFL penalty for spousal abuse at the time of the incident was at most 2 games, the penalty received by Rice. The team has increased that the penalty for first time offenders to 6 games. Since the 2 games was only precedent, Goodell probably is "allowed" to increase the penalty after getting additional information. Of course, that action is under appeal by the union. It seems most unlikely that Rice's penalty, after appeal, will be more than 6 games, although I suppose the full season is of course possible. Then Rice can be put under triple jeopardy when the rules are changed again in the next off-season.
If the NFL had every single tape and everyone told everything that they knew, then the policy of the NFL was still for a penalty of 2 games. NO ONE has posted the name of ANY players given higher penalties for spousal abuse (first incidence or even more).
If Harbough was not transparent enough with his bosses, then shame on him. Other than that, this is a PR issue for BALT. The team can choose to punish him as they wish, including firing him. In any case, Rice will likely be free to play for another team in the second half of this season, or next season at the latest.
BTW, does it matter to anyone what Rice's wife wants? Obviously, the legal penalties have specified penalties and they will be enforced. But, when we talk about action by the team and the sponsors, should it matter what Rice's wife thinks and says through her attorneys or in public or private statements?