It doesn't sound like your boyfriend's ex-wife is contacting you directly or indirectly. A CHO would be to prevent her from contacting you - which, she's not.
If your family and ex family does not want her to contact them, THEY can seek CHOs if they can. If your BF feels that she is accessing information she does not have a right to possess and is unlawfully distributing it, HE can take whatever appropriate legal action he feels necessary.
At this point, I don't see that you have any possibility of a CHO as you are not the target of this woman's contacts.
You can spend a few dollars and talk with an attorney and see if they might be willing to send a "cease and desist" letter, but there may be nothing that can be done if she ignores such a letter. Maybe a consultation with an attorney is a good place to start.

