Metro

Exhaustion caused mom’s fatal subway plunge

A young mom was so tired from her early-morning shift at a Chelsea bakery that she nodded off while standing on a subway platform, fell on the tracks and was killed by a train, cops and her beau said Sunday.

“She wakes up at the crack of dawn to support our daughter. She was exhausted and coming home from work,” said a distraught Yeovany Rivero of girlfriend Aracelis Ayuso, 21.

“Witness[es] told me she looked really tired,” added Rivero, 24, who rushed to the Union Square subway station Saturday afternoon after getting the call that Ayuso was dead.

“They just kept saying she looked tired and she just kind of fell forward off the platform.”

Ayuso had just left her job at Citi Bakery on 18th Street and Fifth Avenue and was headed home when she was killed around 3:30 p.m.

The exhausted woman had been standing on the platform waiting for a No. 4 train when she momentarily nodded off, dropped her iPod and fell into the path of a train.

The conductor spotted her on the rails and tried to stop, but it was too late.

Rivero said the couple’s 3-year-old daughter, Ashlynn, has been asking him, “Where’s Mommy?”

“I don’t know what to tell her,” he said, his voice breaking with emotion.