Please help me with accounting question.

. PROBATE ESTATE PROBLEM

Tom and Mary were married years ago and had one child, Amber. Tom and his partner Dave were recently flying in Dave’s new plane. For a brief period, Dave was distracted and lost control of the plane.

Unfortunately, the plane crashed and Dave died instantly and Tom died a few days later as a result of the injuries sustained during the crash.

When Tom died he and Mary owned the following property:

* Home valued at $500,000 held JTWROS with Mary

* Car 1 valued at $10,000 held by Tom’s business

* Car 2 valued at $15,000 held Joint Tenancy with Rights of Survivorship by Tom and Mary

* Rolex watch valued at $50,000 held fee simple by Tom

* Boat valued at $20,000 held tenancy in common by Tom and Dave

* Life insurance Policy 1 on Tom’s life, owned by Mary. The fair market value of the policy was $100,000 and the death benefit was $200,000. The beneficiary is Amber.

* Life insurance policy 2 on Tom’s life, owned by Tom. The fair market value of the policy was $85,000 and the death benefit was $500,000. The only beneficiary is Mary.

* Non-qualified investment account valued at $2,000,000 owned by Tom, and Mary as the T.O.D.