Six Malaysians were also among those missing.
Her death was confirmed by Sin Chew's newsroom, according to the Malay Mail.
Around 40 Indonesian and Malaysian tourists were visiting the Tiu Kelep waterfall, Senaru Village, north of Lombok, when the quakes struck at 2.07pm local time on Sunday.
Fourteen Indonesians and 22 other Malaysians were rescued from the waterfall site, Nugroho said. Her son, who was with her, is now receiving treatment at a hospital.
"The Ministry would like to express its condolences to the victims and their families affected", it said in a statement.
An natural disaster on Indonesia's Lombok island on Sunday (March 17) has caused a landslide, killing several people, including a Malaysian.
Pi Day 2019 deals in Hampton Roads
The Fresh Market is offering $3.14 off Old Fashioned Apple and Cherry Pies as well as their chicken pot pies from the deli. Valid at participating CPK locations (does not include airport, stadium, certain hotel locations and global locations).
North Lombok Regional Secretariat and Protocol chief Mujaddid Muhas in a statement said there were 40 tourists in the area when the incident occurred.
Landslides occurred at the waterfall following the quake and an aftershock of 5.2-magnitude, he said.
The quake was felt in North Lombok, Central Lombok, West Lombok and all the way to Denpasar, in Bali.
Four ambulances attended the scene, as well as medical and rescue personnel to help the victims.
Meanwhile, a tour agent in Mataram - who wanted to be identified only as Pak Arno - told Bernama when contacted, that a group of 28 Malaysian tourists had arrived in Lombok on March 14.
Bayan district was one of several areas heavily damaged by a series of earthquakes that jolted the island between July and August past year.