Henderson, TX Estate Planning Law Firms & Lawyers

If the land is in a trust, you do not own it:  the trust does.  The trustee decides whether to sell the land.  The beneficiaries (apparently your husband and his two siblings) do not. If a trustee is not putting the interests of the beneficiaries first but is putting his own interests first, the beneficiaries can sue to have him removed.  But whether selling or not selling the land is putting the beneficiaries first is a big question.  You may want to take a copy of the trust agreement to a lawyer who does fiduciary litigation and discuss the specific facts.  

In Texas people can leave their things to whomever they wish.  You might consider contesting the Will if you have evidence tending to prove fraud, lack of legal capacity or undue influence.  Your description indicates none of these.  The last two can be very difficult to prove.  A Will contest can cost as much or more than you might inherit with no guaranty that you will win.

The probate process takes place in the state where the decedent was a resident. Where he died does not really matter. If his wife is still living, probate will probably not be necessary, as long as his wife has access to their assets.