Rimes filed papers against Kimberly Smiley and her adult daughter Lexi on Thursday, seeking more than $25,000 in damages.
Rimes had called Smiley in March to try to stop some negative online postings regarding LeAnn’s marriage to Eddie Cibrian, according to the lawsuit.
The invasion of privacy lawsuit comes one day after Rimes, 30, reportedly sought treatment for stress and anxiety.
The lawsuit states, "The making of the unauthorized recording and the posting of it and edited excerpts of it on various websites have resulted in a public and damaging depiction of Ms. Rimes, have harmed her reputation and personal relationships, and have caused her emotional distress.”
CBS News reports Smiley, a teacher in Northern California, said she was being bullied by Rimes and her supporters and has kept her Twitter and a YouTube post of the call on private settings. Smiley admitted she had her daughter recorded the call because of some "outrageous" things LeAnn was saying.
Rimes and Cibrian married in April 2011 shortly after each ended their marriages.
Country singer LeAnn Rimes has sued two women she claims illegally recorded a phone call she had with them -- without her knowledge -- and then posted it online.