I am still not sure what you are saying, but, Jason did not give up custody, That keeps being said incorrectly. They (JY and MF) had a shared custody agreeement with MF having primary custody. There is a copy of the custody agreement online, it is 8 pages and has the complete custody schedule each side agreed to, in the best interest of the child.
As for anything CY said, we have the daycare testimony that was offered and she also said Mommy was on the bed with farm animals and a cow, and Mommy fell. Jason and CY stayed in Raleigh until after the funeral, then she went back with Heather. There is no way to know what she said or did after that, any more than there is to know just what CY saw or didn't see that nite/morning.
CY also said on the end of the 911 call to MF that someone was there. MF repeated that to the 911 operator.