It's simple to hide: download tailsos, put it on a usb drive, configure everything, put the sauce inside a text document, encrypt the persistent volume with a substantial password, use veracrypt to make another encrypted volume with a hidden volume inside of it, and make every password you have for the encryptions over 30 characters long. You could also just save it to a hidden folder, but I'm gonna assume your mom is the head of the NSA. You could also encrypt the text file with gnupg but that's probably not nessesary because the method I've already shown could probably hide sauce from the entirety of the American government for a long period of time even if they had the usb