Owen owned Blackacre in fee simple. He executed a will leaving the property to his sister, Sarah, for life, with remainder to the children of his niece, Norah. At the time of the execution of the will, Norah had one daughter, Donna. The next year, Norah had a son, Sam. A year later, Owen died. Shortly after Owen's death, Donna died in a plane crash, leaving all of her estate to her husband, Harold. One year after Owen's death, Norah had another daughter, Debbi. Shortly thereafter, Sarah, Owen's sister, died. Sixteen months after that, Norah had a second son, Sid.

Now who owns Blackacre?

What about Donna's share?