PORTLAND, Ore. -- The divorce and child custody battle between the father and stepmother of missing boy Kyron Horman took another turn Monday in court filings.

Terri-Moulton Horman's attorneys argued for her right to see the couple's young daughter, whom Kaine Horman was granted custody of after allegations of a murder-for-hire plot against him last summer.

Read:TerriHorman filing (PDF)

Kyron Horman was seven years old when he disappeared from Skyline Elementary on June 4. No suspects have been named in the case. It is becoming evident that Father's mission is to completely destroy and sabotage the mother/child relationship, a petition filed Monday claimed.

More: Kaine suspects unimaginable harm to Kyron

Terri's attorney Peter Bunch claimed that she was not in a position to fully participate in any legal proceedings such as a custody hearing, since she was a focus of law enforcement.

The latest filing was in response to papers filed last week by Kaine Horman asserting that Terri was seriously emotionally disturbed, and unfit to parent their daughter.

Kaine opposes his estranged wife s visitation request, stating that he believed Terri abducted and may have caused unimaginable harm to his son Kyron.

Court documents claimed Kaine's statements were vicious and his intent was to villify Terri, seeking to further tar Mother in his ongoing campaign to convict her in the court of public opinion.

Kaine suggested their daughter may have witnessed some unimaginable act of horror the day he disappeared.

Hearings in the divorce case were pushed back untilJanuary.

The Multnomah County Sheriff's Office inSeptember assigned the case of the missing boy to a task force.

Complete coverage: Search for Kyron Horman

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