Snow Fairy is unlikely to return from injury in time to be prepared for Royal Ascot.
The five-year-old mare, who has won over £3.5m in prize money, missed the Hong Kong Vase last December after picking up an injury.
She had previously finished third in the 2011 Arc before winning the Queen Elizabeth II Commemorative Cup in Japan for a second successive year.
Her trainer Ed Dunlop has yet to map out her campaign, but trips to the Far East are once again likely to figure prominently.
“Snow Fairy is due to come back to us in about a month,” said Dunlop.
“She’s been at the (owner’s) stud and she’s now back in pre-training in Ireland and we’ll hopefully get her back in four to six weeks.
“I would say Ascot would come too soon for her. After the injury it was always going to be a case of getting her back for the second half of the season and we’ll play that by ear.
“She’ll have all the obvious races as her targets but we don’t know yet which ones they’ll be.”