"So far as the mother is concerned I have made serious findings against her. She has failed in her duty to her children and has placed her relationship with I's father before those matters. It is difficult to feel any confidence that she could put these matters behind her in any acceptable timescale." "[the children] have been exposed to domestic violence by her reconciling with I's father and she has not been in a position to offer any evidence to suggest that that situation could change." "