Your sister does not have to do anything as far as passing assets during her lifetime. If she chooses, she can die intestate, which mean without a will. If this is the case, her husband is entitled to all joint property and a certain amount of her estate under EPIC (the Michigan estate code).
Also, if she is signing papers that were drafted by an attorney, more often than not witnesses will be needed. A holographic will is an unwitnessed document drafted by your sister outlining her wishes and will be considered by the Probate Court when distributing her estate.
Answered on Oct 11th, 2011 at 2:02 PM