can a spouse of the dependent that has passed away but at at the time were married her parents sign a will as a witness
Most people can sign most anything.
I'm sure you know that.
If you provide a few details before you ask a question, someone will be able to offer you the answer you desire.
Let's look at VA law regarding WHO can witness a will.
Virginia MANDATES the signing of a will must generally be witnessed by two competent persons, who also must sign the will in front of the testator.
(An exception to the witness requirement is made if the testator writes out the entire will in his or her own handwriting and signs and dates it.)
Can an interested person witness a Will in Virginia?
Generally, the answer is yes. If the person is otherwise a valid witness, and no other exceptions exist, then an interested person (i.e., a beneficiary) may witness a Last Will & Testament in Virginia.
When it comes to selecting individuals who are eligible to witness the signing of a last will and testament, there are two considerations in particular that come into play.
First, they are generally not related or named in the document in question. In other words, they are therefore more likely to be objective, third-party observers.
Second, they are also over the age of 18, the legal age of majority.
There you go, I think that's what you wanted to know.