that's a great ideaI suggested this for someone else whose ex was playing games with his child's name. Have your family members and yourself give kiddo gifts of magazine and other type subscriptions of whatever she is interested in so that she keeps getting cool stuff at home to her legal name .
Maybe some other personalized stuff, like a sign for her door with her name, a bean bag chair and anything else you can think of.
And, of course, DO file contempt.