Seems like the father in this case is a real mamma’s boy. What kind of man moves away from his own child to be near Mommy? His unwillingness to be a man, fight the system and assert his own parental rights is at the root of his mother’s pain; that and the likelihood that he reproduced with a vindictive bitch.
Either that or the woman didn’t want the grandparent trying to turn her child into a version of this wuss of a man.