Intitle I Is A 2nd Husbad Intitle To Benefit From A House From A 1st Marrige?in The State Of Texas?

Is a 2nd husbad intitle to benefit from a house from a 1st marrige?in the state of Texas? - intitle i

When my sister married the 2nd Time to ask your husband to sign a preliminary agreement. Intitle is that I have all the money if you sell the house to my children a little money? Or need to refinance it note the new sign and if the society so that yhe Meke was part owner of the house? I live in Texas.