The 82-year-old filed the declaration as a part of her bid to obtain co-guardianship over Prince, Paris, and Blanket.
In the documents, Katherine claimed that on July 14, an unnamed doctor showed up to her house and asked her to take a plane.
Katherine did so believing the doctor was under the orders of her longtime physician, but when she got off the plane... She found herself in Tucson, where she had been set up at a luxury resort, reported TMZ.
At the resort, Katherine said her phone and iPad were taken away, her in-room telephone was disconnected and the TV was also shut off.
When Katherine asked about the grandchildren, she was told "they were fine" and there was nothing to worry about. She says she did not know she had been reported missing and her grandkids were upset.
"At the time, I trusted the people I was with to be honest with me," Katherine said.
The declaration is contrary to the statements Katherine previously made in an interview with ABC News surrounded by her children Jermaine, Rebbie and Janet. "One reason I didn't call is I just gave up my phone and I didn't want to have any phone calls while I was here," she had said then.
Katherine was away in Arizona for 10 days, during which she had no contact with her grandchildren and was reported missing by a relative.
As a result, guardianship of the three children were given to their cousin TJ, but a judge Thursday returned it to their grandmother making TJ a temporary co-guardian.
