Why would a kid refer to their parent by their parents name instead of as mom or dad? Any ideas what is going on there?

Kevin

Me 36, W 37
M: 08/02/97
D13, D9
1st Bomb 02/08
Reconciled 04/08
2nd Bomb: 09/08
W filed for D 02/04/09
Separated 03/09
D dismissed 06/09/09
Still separated...