I can understand why Grant's parents came forward with the love letters. Amanda portrays him in a very poor light. They must have been yelling at the TV when she testified. Poor, scared, Amanda with Laura's children and so scared because she didn't want to be a single mom again.
She complains about the custody arrangements and the report, where he claims that the tests were from the 1920. She claims that she didn't know what the report said until a year ago, but when the report was released, she read two pages and completely disagreed with the report. She always knew what was in the report and didn't like the fact that Grant would have to live near Laura to spend time with the children.
Amanda wanted to be in razzle-dazzle NYC, didn't she say she lived in Manhattan?? Manhattan to North Carolina is a big difference. Her other spot was California. Notice how she got in and out of Texas verrryyyy fast (after the husband)....she only got stuck there for a few months taking care of her mom. Then she quickly dumped the mom with the sister, and got back to her razzle-dazzle life.
I don't think she ever for a second wanted to live in North Carolina, especially not for Laura.