We recently found out that, as my stepmother is gravely ill, she is "allowing" her kids to come to her house to take antiques etc since she knows she is dying.

She said to my Dad that "you may not give them their stuff" once she is gone. Dad is taking care of her 100% of the time.....very exhausted with the cooking/cleaning etc. He is doing the right thing by that, we know. But what can we do about this? Are her kids "right" in taking what is "theirs" before she dies?