A 90-year-old grandmother who worked as a midwife during World War II had not delivered a baby in 50 years — but that all changed when her granddaughter suddenly went into labor at home.

When Maggie Jones got a call that her granddaughter, Kathy Shah, was in labor – she thought they needed her for moral support, the U.K.’s Daily News reported.

However, the speed of events left Jones with no choice except to jump in and help deliver her great grandchild.

“It was only when I arrived at the house that I realized it was more serious,” Jones told the newspaper. “I thought to myself… it's time to wash your hands and don your overalls, and I just jumped right in to help in whatever way I could.”

About 40 minutes after Jones arrived at the house (she lives next door), little Carys was born weighing 7 pounds, 7 ounces.

“We’re so lucky that my gran lives next door,” Shah told the Daily News. “She was totally amazing and just so calm. I don't know what we would have done without her.”

Click here to read more and see photos from the Daily News.