"Feeling good! I did my first bit of gigging in months at the weekend, performed a few songs at the Billboard annual staff holiday party in NY with the house band", she wrote on December 20, 2017.
"Her family are still waiting for more details to come from London about her death".
Previous year the Cranberries canceled a number of concerts in North America and Europe, saying O'Riordan was suffering from back problems. She was 46, it was announced Monday, Jan. 15, 2018.
The band released five albums: Everybody Else Is Doing It, So Why Can't We?
O'Riordan, lead singer of Irish band The Cranberries, has died.
"Feeling good! I did my first bit of gigging in months at the weekend, performed a few songs at the Billboard annual staff holiday party in NY with the house band", O'Riordan wrote December 20.
In those early days of her career, off-stage Dolores O'Riordan had none of the swagger that made her a compelling performer.
The musician was in London for a recording session when she died at the suddenly at the age of 46.
Even though the band cancelled its U.S. and European tour dates in July due to O'Riordan's health issues, they were gearing up to tour again.
Holmes said the singer's family is "devastated" by the news.
"Oh wow. Dolores O'Riordan was a BIG part of my childhood". I'd never heard somebody use their instrument in that way.
The band, which includes guitarist Noel Hogan, bassist Mike Hogan and drummer Fergal Lawler, went on a hiatus in 2003 but reunited in 2009. The tour was cut short because O'Riordan was suffering from back problems. She went into self-protection mode but with massive success she then began to embrace the possibilities of fame and became increasingly outspoken - sometimes her views on controversial social issues in Ireland saw her cast as a pretender to Sinead O'Connor. "Helped me give myself permission to be".
The singer had previously admitted three assaults and obstructing a garda after being taken off an Aer Lingus flight from New York's JFK to Ireland on November 10 2014.
She was ordered to pay 6,000 euro to charity for headbutting, kicking, hitting and spitting on police officers following an alleged air rage incident.
As always, our thoughts are with Dolores' family and fans during this incredibly heartbreaking time.