AKRON —  Summit County Medical Examiner Lisa Kohler said she's not required to be 100 percent certain Tonya Johnson intended to kill herself, to rule her death a suicide.

However, Kohler explained all the evidence she examined in the case of the 43-year-old Canton firefighter's Feb. 22, 2016 death, could lead her to no other explanation.

"I believe to a reasonable degree of medical certainty," said Kohler, the last of 11 witnesses to testify Thursday -- on the final day of a three-day hearing in Summit County Common Pleas Court.

Johnson was struck and killed by a pickup truck on Route 8 in Akron's North Hill area shortly after 4 p.m. on a Monday. She had exited the Cadillac Escalade driven by her husband of eight days, Randey Johnson, after he had pulled off the road on the southbound side of the highway -- some testimony indicated the couple was in an argument.

Kohler ruled the death a suicide.

Johnson's family believes it was an accident.

This week's hearing was part of a lawsuit her estate filed against several parties, including the medical examiner's office and Guardian Life Insurance, which declined to pay on a $3 million policy. Family attorneys David DuPlain and Danielle Pierce argued to Judge Amy Corrigall Jones that she should overturn the suicide ruling.

Twice on Thursday, the judge turned down requests to dismiss the case, made by Assistant Summit County Prosecutor Colleen Sims, who represents Kohler. Although testimony is complete, Corrigall Jones gave both sides until Feb. 9 to submit additional written arguments, for her to consider prior to deciding an outcome.

Overturning the medical examiner's ruling could enable beneficiaries to collect on the $3 million policy, which excluded payouts on suicide deaths. A separate $2 million Guardian policy already was paid to Johnson's three children. In their civil lawsuit, Johnson's estate has asked for at least $5 million.

Those who testified Thursday also included witnesses on Route 8 at the time Johnson was killed, a financial planner who sold Johnson the insurance policies, Akron police officers who investigated the death and a death investigator from Kohler's office.

"There was a woman in the middle lane of the northbound traffic," said David Mendenhall, who was driving south.

Multiple witnesses had said Johnson crossed all three southbound lanes, then made two attempts to climb a concrete median barrier, before finally winding up on the northbound side.

Mendenhall said Johnson "stepped back" from an oncoming vehicle in the middle northboud lane, which caused her to be struck by a Nissan pickup truck that was traveling in the left lane.

Matt McGaughey saw it differently.

His vehicle was on the Tallmadge Avenue exit ramp on the southbound side, next to Johnson's parked Escalade. He said Johnson "appeared depressed," as she walked across the highway.

"I watched her step out in front of a red pickup truck," he testified.

Several witnesses called by Sims pointed out that Johnson could have taken a much safer route by simply walking up the highway ramp. They pointed out there are sidewalks on the Tallmadge bridge above.

Throughout the three days, neither side disputed that Johnson's side business, In Trusting Care, owed the IRS back taxes. But witnesses almost universally testified that those taxes were being paid and Johnson was looking forward to financial health.

"She wanted to create a pot of cash," said Gary Sirak, Johnson's financial planner.

Medical Examiner Investigator Lauren Fowler testified that Johnson's cousin, Regina Skinner, told her that Johnson "had a history of suicide ideation." Fowler added that Randey Johnson told her Tonya Johnson was "bipolar" and was on medication.

During cross-examination, Fowler said Johnson's medical records did not verify either of those statements.

During questioning of Akron Police Sgt. Michael Vavro and Kohler, attorneys for the estate asked if either were influenced by pre-conceived beliefs that it was a suicide before fully investigating.

Both said no.

Kohler said Johnson's mere decision to walk on to Route 8 that day was evidence she intended to harm herself.

"If the traffic was not as heavy ... I would entertain the idea of an accident," Kohler testified, later adding "I do not believe it is possible for an individual to cross Route 8 at that time of day."