Courts can issue protective orders when there is a reasonable fear of imminent bodily harm. It seems unlikely that those circumstances would result in the loss of a home.
[In accordance with the Avvo community guidelines, this communication does not constitute "legal advice", nor does it form an attorney-client relationship.]
Any one can try and get a restraining order against someone. The more important question is will she will be successful? The answer is impossible to say, but if your description of the facts is accurate, it would be highly unlikely for a judge to issue a restraining order.
Your husband will need to respond to any papers that are served.