Alexandra Prendergast is the stepsister Sarah Caisip, who was in coronavirus quarantine after arriving in the state from Canberra and not allowed to attend her father Bernard’s funeral in Brisbane.

The Prime Minister called Premier Annastacia Palaszczuk asking her to intervene on Thursday, but she would only refer it to the chief health officer.

Opposition Leader Deb Frecklington asked the premier about Ms Caisip’s case in state parliament on the day, and later  Morrison phoned 2GB radio host Ray Hadley to talk about the case live on air.

In the end, Queensland Health gave Caislip, 26, permission to view her father’s body, alone and dressed in full PPE, after the funeral on Thursday.

Footage and photos of Ms Caisip and her family were shown around the country on the nightly TV news and in the newspapers.

Several federal Coalition politicians including Morrison, Matthias Cormann and Peter Dutton, as well as former Liberal party staffers and commentators like Peta Credlin attacked the Labor premier over the case.

But Caisip’s stepsister has reprimanded the Prime Minister and accused him of conjuring up a media storm to further his political agenda, marring her final memories of her father.

“Mr Morrison, I am extremely disappointed that you have used my family to try and advance your political agenda … Your announcement of my father’s funeral on [radio] prompted a media circus outside the crematorium at which the service was held,” Prendergast, 32, wrote in an open letter to the Prime Minister published by various media outlets.

“I am devastated that the final memories of my father have been marred by the media you have used to prosecute your political agenda.”

Prendergast said Morrison’s actions made “an absolutely devastating time for my family even harder”.

“Sarah Caisip should not have been used as a tool to vilify the actions of the Queensland Premier and Health Department” on border controls, she wrote.

Prendergast also called on Morrison to apologise because while he highlighted her family’s case “there’s been many, many other cases that are very similar to this case where he has not intervened”.

The federal Coalition’s criticism of the Queensland Premier’s border controls comes less than seven weeks out from the Queensland election.

Frecklington has been calling for “consistency, compassion and common sense” on border exemptions” while criticising exemptions for “the rich and famous” after AFL executives and US actor Tom Hanks were given permission to do mandatory quarantine at hotels of their choosing in Queensland.

-AAP