A bill to ensure anguished parents can get a child seizure treatment is finally moving forward in the Wisconsin Legislature.

Senators couldn't agree in the last legislative session on the proposal, which would have made it easier to get a drug that is derived from marijuana and used to treat children who suffer from severe seizures and have few other medical options.

The state took steps to provide very limited access to the drug three years ago but legal restrictions around it still dog families.

"It's disappointing that it's taken three years to get here," said Sally Schaeffer, whose daughter Lydia died in 2014. "But I'm hopeful that this is a start to getting the treatment for people who need it and want it."

The legislation passed the Assembly two years ago but was successfully blocked in the Senate by three GOP senators. But last month the measure passed the Senate, 31-1, with only Sen. Duey Stroebel (R-Saukville) voting against it.

Senate Bill 10 is scheduled to be taken up by the Assembly on Tuesday and a companion bill has passed the Assembly Committee on Children and Families unanimously.

Cannabidiol oil, or CBD, is a byproduct of marijuana that proponents say may reduce seizures in children like Lydia Schaeffer, who suffered from them frequently. Some of these children experience as many as 100 seizures in a single day.

In 2014, legislators and Walker approved legislation — Lydia's Law — to allow families to obtain cannabidiol oil in certain limited cases to treat a patient. But the conditions have proved so restrictive that families and physicians have been unable to make use of it.

Families can buy CBD oil over the internet from reputable sources but currently lack legal protections if they choose to do so. Under normal circumstances, the oil won't make users high because it's extremely low in THC.

The bill allows families to possess CBD oil for any medical condition if approved by a physician on a yearly basis. But it doesn't allow CBD oil to be made in Wisconsin.

One of the proposal's lead sponsors, Sen. Van Wanggaard (R-Racine), said the proposal isn't a legalization of medical marijuana or a step that would quickly lead to it. Wanggaard, a former police officer, said he believes marijuana can lead to other forms of drug abuse and that medical marijuana would need tight controls or it would lead to recreational use.

"It'll be a while before we get to anything like medical marijuana," Wanggaard said.

The changes come too late for Lydia Schaeffer. Her father, Tom Schaeffer, went to wake her up at their Burlington home in May 2014 and saw that her skin was blue. One of Lydia’s brothers, who was only 3 at the time, still remembers and talks to his mother about the terror he felt hearing his father’s scream.

Sally Schaeffer hopes the legislation prevents that outcome for another family. It won’t for hers.

“I’m numb because of the loss of my daughter. It still feels so fresh for me,” Schaeffer said. “A loss like that is so different from being successful in a legislative process.”