surviving spouse rights my husband died suddenly he owned a little property…

surviving spouse rights
my husband died suddenly he owned a little property with a mobile home on it no one has paid the taxes on it and it will be lost if not paid by march i need to know if i pay the taxes and move in can any of his four children come in and kick me out i need to know what my rights are as a surviving spouse

Probate.

Probate.
My husbands wife is deceased. She has a 14 year old son,(FROM A PREVIOUS MARRIAGE). My husband and his deceased wife paid cash for the mobile home and the land that we now live in. She also had a 2005 automobile that she paid cash for and her name was the only name on the title. The overseer came and took the automobile. My husbands name is the only name on the title of the mobile home. He had the title changed after her death. We were told that the child is entitled to 2/3 of the land and the 2/3 of the automobile but that he is not entitled to anything from the mobile home that we now reside in. Is this true? Will his deceased wife’s child’s (guardian) & overseer be able to take our home? The lady that is raising his deceased wife’s son continues to threaten us with this. She says that she is going to sell our home. We don’t see that she has any authority to do this. She is the overseer of the sons part of his mothers things. My husband and his deceased wife were very much married.
They lived virginia and the property is in virginia. She did not have a will.

Am I allowed to contest my recently deceased mothers estate /trust at the court…

Am I allowed to contest my recently deceased mothers estate /trust at the court hearing–I was invited
to attend the hearing if I want. I don’t know if I am named in the trust as having predeceased my
mother. In the past year a nephew took control of my unstable bed ridden mother and had been
using her funds making himself power of attorney and taking complete control of her money and
putting himself as a joint holder on her accounts. We have learned recently that he has arrest
records in 3 states and was convicted of a felony. He bought a mobile home with her money,
trucks, cars, house

My father passed away in January in Va.

My father passed away in January in Va. left no will.
My father passed away in January in Va. left no will. He had several acres of land, mobile home that he rents out. He also had bank accounts, CD ‘s, IRA. My sister and I are in other states, my brother lives in Va, so he will be handling everything.
My question is, is there something I should do, or do I just leave everything in my brothers hands? How do the courts know who the heirs are? Do they just take my brothers word for it? Will I be contacted if my assistants is needed?