GREEN COUNTY (WKOW) — The husband of a woman killed by a man who admitted to driving drunk is seeking justice, as the man who hit his wife faces punishment in another death.

Nathan Leopold will be sentenced Wednesday in Green County Court. He’s facing charges for driving under the influence and killing 70-year-old David Leck in 2017.

That crash came 15 years after Leopold hit and killed 28-year-old Aimee Kubler while she was out for a jog.

“Our home was just a couple hundred feet from where I found her that night in the ditch,” said Aimee’s husband at the time, Toby Kubler. “The actual trauma of finding her…I think that’s the hardest thing. And the thing that haunts me the most, just having to see her like that.”

Leopold was sentenced to seven years in prison for hitting Aimee Kubler and driving away. He admitted to drinking before driving, but because he left the crash site prosecutors told Kubler’s family they didn’t have enough evidence to charge him with a drinking-related death.

“There seems to be leniency for people who drink and drive and kill people in the state of Wisconsin,” Kubler told 27 News.

Toby Kubler met Leopold while he was in prison, as part of a restorative justice program. Kubler says Leopold promised to never drink and drive again and always remember Aimee. So Kubler forgave him after Leopold served his 7 year 7 month prison sentence and was released in 2010, according to DOC records.

Kubler says he got a call from a parole officer asking if he’d be okay with Leopold being released early from his extended supervision probation time of almost five years.

Now, Kubler is full of regret about another death that could have been prevented.

“I said yes, if he should be released early, that’s fine. I don’t mind. And so after practicing all that leniency, I just felt like a fool that he went and killed another person and that I was partly responsible for that by not doing anything and for not pushing for a stronger sentence,” he said.

Kubler says he couldn’t make that same mistake again, so he sent a letter to a Green County judge, to review before sentencing Leopold in this second case.

In that letter, Kubler describes the tragedy of his wife’s death and the guilt he still feels over how it played out in court.

He says he’s afraid if it’s not a tough sentence this time, Leopold could kill again.

“[Leopold] knows he broke his promises. He knows he can’t help himself. And he should really willingly go to prison for the rest of his life because he knows the public is not safe as long as he is not incarcerated,” Kubler said.

Leopold will be sentenced Wednesday, after pleading no contest to homicide by vehicle while using a controlled substance and causing injury while operating under a controlled substance. A charge of homicide by intoxicated driving was dropped.

David Leck was killed and his 12-year-old granddaughter was hurt in that crash on Highway 11 in Green County.

Kubler lives in Hawaii, so he won’t be able to be there, but he says his mother will read his statement to the courtroom.

Aimee’s parents will also be there.

David Leck’s family tells 27 News they’ll also attend the sentencing.