05/11/2012 at 08:30 PM EDT
appeared in court Friday in Nashville with her dueling parents for an emergency closed-door hearing.
The actress's mother, Betty Witherspoon, has filed papers
claiming her husband of 42 years – Reese's dad – tied the knot with another woman while still married to Betty.
The hearing before Probate Judge Randy Kennedy was closed to the public, but Kennedy typically handles cases involving conservatorship and determining mental capacity, The Tennesseean reports.
A video shows Witherspoon, wearing a dress and visibly pregnant
, walking into the courtroom with her husband Jim Toth, along with her father, mother and brother.
Betty filed a petition for annulment of what she says is John Witherspoon's wedding in January to a woman named Tricianne Taylor.
"No person in Tennessee can marry another while being married at the same time of the second marriage," says the petition, which includes a marriage certificate for John Witherspoon and Taylor.
John, 70, a physician, has suffered a number of personal problems including alcohol abuse, hoarding, compulsive spending and recently lost his medical practice, Betty alleges.