Heath Ledger's family has decided to donate his entire estate to the late actor's daughter, Matilda Rose. Two years before his little girl was born, the Dark Knight star – who died from an accidental overdose of prescription drugs in January – signed a will leaving his fortune to his parents and sisters. But Ledger's father, Kim, says they have decided that all the money should all go to 2-year-old Matilda (the actor's daughter with ex-girlfriend Michelle Williams). In fact, he tells PEOPLE, that was the plan "from the moment my boy passed away." "There was never any question about the fact that Heath's estate would go to Matilda," he says, confirming a report in Australia's Sunday Times. "Never a question. We are very close to Michelle and Matilda." All One Family Although Williams and Ledger were separated at the time of his death, the two remained close. In February, the actress joined the Ledgers in Perth for their son's memorial and wake. When the details of the will first became public, Kim said Williams and Matilda "will be taken care of." He added, "That's how Heath would want it." Kim, who is based in Australia, also tells PEOPLE that he and his wife, Ines, recently returned from a two-week visit with their granddaugher in New York City. "It was lovely," he said. "There is no animosity [with Michelle] ... We are all just one family." Although some reports have valued Ledger's assets at up to $20 million, Adelaide accountant Mark Dyson – an executor of the actor's estate – has refused to state the amount Matilda will inherit. Source: People