Question: Baby distressed by one parent
The comments only indicate "why is the child so distressed by the presence of this other parent" as a missing detail and that is addressed by the second edit. What other details are desired?
A comment by a moderator says "They went to a professional and they couldn't help", but didn't explain why the professional's help is relevant to the question that is actually asked, or any other details that might be missing in the question.