This was precisely how I took that story post - an audition went poorly and now she feels the need to publicly make excuses for why and/or guilt trip them into giving her a 2nd chance.
Bad auditions are hardly the end of the World? Or uncommon? I have read about A List celebrities botching auditions, I have botched job interviews and presentations. It sucks of course and it can eat away at you but you largely suck it up and move on! It should have been posted on her private Instagram if anything!?
I hate to take a person's words so literally but good grief imagine your beloved partner referring to you as "a shag"