Whoa. A lot of people here sure are quick to deny access to the legal system to someone just because they were DWI. While operating a motor vehicle under the influence of alcohol or other distractions is bad, it's not certain proof that such a driver was 100% responsible for an accident they were involved in.
We know very few of the facts. We do know that an expert witness previously swore under oath to statements that support the girl's position. If she's successful, she will not be the first or last impaired driver to claim that another party was at least partially responsible for an accident.
What has her lawyer done that makes him a scumbag? What has he done that you wouldn't want your lawyer to do if you felt another driver was at fault in causing an accident that killed your passenger and destroyed your vehicle?
As to the intoxication manslaughter, what if you'd only had two or three beers at dinner hours earlier and the .02 you blew was put in the report as a .20, accompanied by video of you staggering around (apparently drunk) after the wreck? Would you think four months in jail and eight years probation would be too light a sentence? Could anyone here, at age 21, have contemplated completing eight years probation? Despite knowing that the other driver swerved recklessly into your lane causing an accident that couldn't have been avoided, would you take full responsibility for it just because you had been drinking?
I realize it's fun to jump on the "the world is coming to an end because of frivolous lawsuits" bandwagon, but it's far from the truth (at least here in Texas). The sad reality is that there are way more potential plaintiffs with legitimate claims that can't find or afford legal representation against employers, landlords, car dealers, hospitals, insurance companies, neighbors, law enforcement agencies, municipalities, etc., and the lawyers that manage to take a few of these cases a year, expecting to make little or nothing on them, are anything but scumbags.