Reverend is adorable, and I agree adopting pets is a cute symptom

I have 5 cats, they each are so special with their own personality, and they like my big dog. Then there are the chickens... lol.
Sound like you're close with your mom and want to tell her. I think you're getting ready to do it and rationalizing it all out. Might turn out more ok than you think, I hope so!