I would expect them to know I had no intent to sell as that is what I told them... not sure how else to go about that. And it says to give the dog back if we can't take care of her. Well we can and we do so therefore I won't be giving the dog back and I didn't break contract because I didn't sell the dog. So as my non legal perspective I am within my rights. Thanks for the "help."
Your opinion is noted, madam.
As an attorney and judge, with decades of education, knowledge, and experience over the years; if you're sued, your defense won't be very effective or persuasive.
If you wish to avoid further hassles or extended legal entanglements, it might serve you better to speak with the rescue agency and see if you can quiet and calm their fears.
You've offered a plausible explanation for the advertisement, most importantly your intent was never to sell the animal.
You wanted to send a message to your spouse.
The agency doesn't want to waste resources and time pursuing this, so a friendly, informative conversation should convince them of your true intent.
In fact, if I were in your position, I'd offer a donation as a sign of my continued good intentions.
If you are sued, that's the defense I'd use before the judge.
I wish you well.