According to a source, the 35-year-old was due to spend Easter Down Under with Hince but changed her plans as she was worried singer Alison Mosshart, Hince's band mate, didn't want her there and possibly getting in the way of the two-piece band and their work flow.
"Alison, who is very close to Jamie, felt his focus would be on Kate, not the tour and she was apparently kicking up a real fuss about Kate's presence," the Daily Express quoted the source, as saying.
"So Kate decided not to go in the end because she was worried about any possible aggro," the source added.
The model has instead gone to 50,000-pound girlie holiday to the Maldives with long-time friend Fran Cutler, according to the source.
She left this week for Easter trip with her daughter Lila for a spa-packed, sunshine extravaganza complete with a butler on call 24 hours a day, the source added.
"She has been to the resort before and tries to make her spa detox an annual event," the source said.
"But it was a last-minute decision to go to the Maldives again so soon, apparently driven on by Alison's dark cloud.
"Kate and Fran, Kate's daughter Lila and Fran's daughter Mercy now plan a healthy, relaxing and expensive Easter break instead of the stress of possible conflict with Mosshart," the source added. (ANI)