They have been separated for around 2 years. He left her for no apparent reason other than he couldn't cope with family life. He then had no contact with his kids for 8 months. He then decided he wanted some contact. She arranged it, gradually, so he could have them every other weekend. he is now with a new partner and her child.
She was having the kids as usual for xmas and he was having them for new year. Suddenly, out fo the blue, he sends her a barrage of abusive texts saying he wants them for xmas. She said no as they are going away to her mother's.
He has totally flipped out, bombarding her with abusive texts, has fallen out with his mother who he says has ''stitched him up'' and ''made him sign stuff'' (there is no legal paeprwork involved.)
He has parental responsibility towards one child but not the other. She is terrified that in his (alcohol and drug fuelled) state he is likely to try and snatch her kids for christmas.
What should she be doing, legally to prevent him doing something like this (he is IMHO, mentally ill, is prone to totally irrational behaviour with no thought to consequences)
Any advice here welcomed.