Ive been down this road before as well and i also unfortunately pur my better half in such a situation because my past girlfriend was doing the same and its honestly simply put she knows that he has moved on and lost her chance so her motives are looking for anythimg to stir the pot between you and him. But yes i agree if theres no children involved no need for communications aside if dealing with court because even with a response to a simple text let alone nit filling you in completely is giving her that little bit of power she thinks she has over him. And does belittle , if shes doing the whole family thing then shes really desperate and at her last resorts