A mod/admin can delete your post soon and repost it anonymously.
Don't go start shit, that will just make things worse. Your mom is just emotional because this is all new to her and hitting her all at once - she thought her own son was stealing and is just now learning the truth. Just reassure her that you love her and will stand up for the family but you need to let the cops do their thing and let justice run its course. It would be silly for you to do something and get caught for it and thrown in jail when you didn't have to do anything.