Emotional Support Animal in a No-Pet Apartment Complex

[Matthew L.]

I have a 24-unit apartment complex that has a no-pet policy.  In NM, emotional support animals are classified as assistive animals that cannot be discriminated against.  An existing tenant, with 4 months left on lease, sent me this text....

"So I know there's a no pet policy but my therapist is discussing me getting an emotional support dog to help with my anxiety and depression"

I do not want pets at the complex, because even her allowed dog will create issues with the other tenants who have wanted pets at the property (i.e., they will start figuring ways to get their pets in either through the same route, or by just bringing them in unauthorized).

I'm interested in how others would handle the situation?