She doesn't know if it was her plea or the pizza and double chocolate cake she had for dinner, but Ali complied. Willison went into labor at 6:15 a.m. Thursday.
It's Willison's third child and Stewart's first.
"I'd seen the head and I thought I was going to faint a couple times," Stewart said with a grin.
Aside from being a good omen, Stewart, 25, said a New Year's baby has other advantages.
"We'll never forget when her birthday is," Stewart said.
Ali, named for a baby alligator seen on a nature show, wasn't the only baby who ignored the due date.
The first baby born in the Tri-State area, delivered in Chambersburg (Pa.) Hospital, was five days late. So was Frederick Memorial Hospital's first New Year's day delivery.
Diane Tester, of Greencastle, Pa., was looking forward to crawling into bed and getting a good night's sleep after a New Year's Eve celebration in Frederick, Md. Her baby had other plans.
"As soon as we got into bed, my water broke. I think the last thing her dad said to me was, 'I shouldn't have had those four beers,'" Tester said Thursday.
About two hours later, Catherine Elizabeth Speak was born. Tester and Catherine's father, Gregg Speak, figured theirs wouldn't be the first baby born in Chambersburg Hospital, much less the Tri-State area.
"She's a celebrity," Tester said.
Catherine is Tester's third child and Speak's first. Tester's two boys, ages 9 and 7, are delighted at having a baby sister, she said.
"We're blessed. The best part is she's perfect. She's a dainty little beauty," Tester said.
Just an hour later, Audra and Gregory Leonard of Frederick welcomed their first child, Christopher Jeremiah Leonard, at Frederick Memorial Hospital. He also arrived five days behind schedule.
"He's late, like his mom," Audra joked Thursday from her hospital room. "I couldn't believe it. My mother said it would be a boy and a New Year's baby. I guess mothers know. It was a wonderful shock."
Elsewhere in the Tri-State area, there were no reported births at City Hospital in Martinsburg, W.Va., Jefferson Memorial Hospital in Ranson, W.Va., or Waynesboro Hospital in Waynesboro, Pa., by Thursday evening.