But the archdiocese argued the nuns did not have the right to sell the property, which includes 30,000 square feet of living space, a pool, a tower and an adjoining prayer house, and it instead approved a sale to Perry, even though Hollister was already living there.
A judge ruled that the sale of the convent was invalid and Perry and the Catholic Church were awarded a total of nearly $10m (£7.2m) in damages in December previous year.
Just before her death, Holzman made an impassioned plea to Perry on Fox 7.
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On Friday, Sister Catherine pleaded with Perry to "stop" and that she was 'hurting a lot of people'. Holzman was a member of an order of elderly nuns involved in a dispute over the sale of their convent in the city's Los Feliz neighborhood. "Please archbishop ... Do what is right in your heart".
Remember that lawsuit pitting Katy Perry against a group of nuns and a restaurant owner over an eight-acre convent property in El Lay?
Ultimately, the court sided with Perry allowing her to acquire the property in October 2016 - pending approval from the Vatican - however the legal battle didn't end there.
"I was sad to hear the news of her passing and I have offered a Mass for the repose of her soul", the statement said, according to Fox News. Meanwhile, the nuns who formerly occupied the convent wanted to sell the property to restaurateur and hotelier Dana Hollister.
Talking about Hollister's bid she said: "We asked her to save us, to buy the property". A jury later determined Hollister intentionally tried to disrupt the sale and ordered her to pay $15 million in damages to be shared by Perry and the Archdiocese. However Sister Callanan told the LA Times that she and Sister Holzman disapproved of the pop stars image.