The EEOC is a good start and not talking to the media is also good advice. Let an attorney advise you on that and take a day or so to calm down before contacting them so you don't appear to be an angry lunatic. First thing have her go file for unemployment. The state will then investigate on your behalf and will also find out if Walmart is going to contest benefits. If the state allows benefits then that can be also used as ammo. There may very well be an arbitration clause that she signed when hired or at some point thereafter which would mean you can't take them to court only to arbitration. Try to find any and all Walmart paperwork from the beginning of time including performance evluations and such. Also, anybody on her side there is going to clam up real quick for fear of losing their jobs. Although they appear to be friends now they can't be if they want to stay employed. So, I'd say go file unemployment first. Write down the facts as you see them. Request from Walmart the reason for termination in writing...it will be something real generic. Start a folder with your facts and any and all paperwork including names and, hopefully, home addresses and phone numbers of co-workers and witnesses. Take a time out to calm down. Talk to the EEOC and go from there.
_________________________
"You learn more from losing than you do from winning." Lou Pinella