Probate
Texas has a variety of methods to probate an estate. Probate in general is not a horrible process that you have heard stories about. In Texas, the most common methods of probate are as a muniment of title, independent administration, and dependent administration.
However, Texas does require you to probate a Last Will and Testament within four years. Additionally, each spouse's estate must be probated. Just because Mom and Dad were married for 50+ years, does NOT mean that everything goes to the survivor immediately without completing the probate process.
Forms and Information
Families fighting in probate is an unfortunate occurrence that is detrimental to all involved both emotionally and financially. This hypothetical can explain why family fighting in probate is not a productive method.
This informational page can help explain the typical independent administration of an estate.