Long question? My father died intetate (no will), mother has life estate

Question

since vested deed was only in my fathers name. Interest was probated as her life estate but interest 1/4 each to 4 children. If she owes IRS or Dept of Revenue (since she owns a business on the property) could the IRS or DOR (since she owes sales taxes) be put on the property for her bad debts? Also if she is on my deed (which is right to survivorship) could IRS put lien against my property? I should of had this one changed years ago but never thought mother would go crazy like she is now. Thanks