but now my therapist said to remind her of that again this week and to tell her that I may call OM.
Time for a new therapist; that's all HORRIBLE advice!
a) WHATEVER you do, be it legal action, exposure, financial moves or even just GAL stuff, you just DO it. You don't TALK about doing it, and you certainly don't TELEGRAPH doing it!
b) Repeating hard boundaries (like "I will not compete with OM") only WEAKENS them, not STRENGTHENS them. Once you've stated your boundary, live it out, including any stated consequences.
This therapist doesn't sound like they've much in tune with DB/DR principles.