Should I file a law sue family members

I am sorry to hear about your mother passing. Under the law, her "estate" owns the house, not you and not your siblings. If your mother died with a Will, that was to have been filed by the persnonal representative within 30 days of the date of her death. If without any Will, intestate law would apply and her estate presuambly would pass to her surviving spouse, if any, and the children, and if no surviving spouse, to the children equally. The  estate must be $50,000 of solely owned assets to require probate. If her estate was less than $50,000 of solely owned assets, to resolve the estate, may take some type of probate summary procedure. You are well advised to talk to an estate lawyer about these issues. This is not a family law question.