Death and Bar Review

It's been a full day of wills and trusts. If law school hadn't already trained me to laugh at death, bar review is trying its hardest. We've got people dying during poker matches and shuffle board games... but let's look at a more realistic scenario...

Sally married her high school sweetheart Dwayne. In a three year lapse of judgment, Sally and Dwayne decided to attend law school together. Two months after graduation, they were found dead surrounded by a myriad of bar review books. There is insufficient evidence that Sally and Dwayne died otherwise than simultaneously. At the time of their death, they shared a home in Seaside, Florida as joint tenants with right of survivorship. Sally is survived by her mother and Dwayne is survived by his brother. Who takes the house?