And this is something I am going to look into as well.
Another question, we have focused on medical and school records, but what about calling stepma- Mommy? Not a form of mommy, like mommy "her name or initial", but mommy? I have heard differing views on this from "it's petty, let it go" to "this is a big issue". I have essays written by the children for school that call step ma "mommy". Is it a big deal in association with everything else or no?
This needs to be a big part of your focus. Have those essays ready to present.