Michigan Compiled Laws, Chapter 700. Estates and Protected Individuals Code § 700.5428

Sec. 5428. (1) When doing any of the following, the conservator and the court shall take into account the protected individual's estate plan as known to them, including a will, a revocable trust of which the individual is settlor, and a contract, transfer, or joint ownership arrangement originated by the protected individual with provisions for payment or transfer of a benefit or interest at the individual's death to another or others:

(2) The conservator may examine the protected individual's will.