Tan, I'm so sorry to hear you lost your FIL so suddenly, even though he was unwell it still sounds like such a terrible shock to you all. As much as you want to take away your family's pain and grief, you can't, all you can do is be there and be present to them, love them, and be present to yourself as well.

It may be worth getting in touch with a social worker from the hospital, the Cancer Council or even the Leukaemia Foundation. They may be able to help with some bereavement support for the whole family.

My thoughts are with you at this sad time.