Stephenson, MI Estate Planning Law Firms & Lawyers

Your question does not make any sense and what you have cited is not the law. I suggest you contact an attorney for a free consultation to get an answer to exactly what your question is.

You do not say whether your mother-in-law had an estate plan that gives your sisters-in-law the right to to sell the house. Find out if your mother-in-law had an estate plan (will, trust, beneficiary deed, etc.). If she did, find out the details of the plan. If your mother-in-law died without a will or other form of estate plan, then her children share equally in the assets. However, since you are not a blood relative, in Missouri your son gets his deceased father's share.

Unless your father died within weeks of his mother, his estate should have been settled or at least far enough along that the executor of his mother's estate would have a pretty good idea if his mother was a beneficiary. Otherwise his estae would have no impact on her estate settlement.