My partner and I got a civil union back in July, and I was wondering how she goes about being a legal parent to my children from a previous marriage. Their father and I have joint custody, and I don't know how this works. On the website " illinoislegalaid.org" it states under the children section for civil unions that once the union is legal, then she has rights. Please help me figure this out, as I dont want to make the wrong assumption. Is there a form to fill out at the courthouse or how does the happen?