has a perfectly good reason for being MIA from her husband and family last month -- it has nothing to do with the state of her marriage, and everything to do with her returning to reality TV., posted a cryptic message on social media about missing her on Mother's Day ... playing it very coy about her whereabouts., reuniting with her family in Mexico and giving an equally vague message about her mysterious disappearance.
Sources with direct knowledge tell us ... the reality TV legend wasn't"missing" after all -- instead, we're told she was filming season 3 of Fox's"Special Forces: World's Toughest Test." For those unfamiliar with the show, 'Special Forces' takes a group of celebrities and has them undergo grueling challenges from the playbook of the U.S. military's selection process.
The show's become an opportunity for celebs to take a hard look at themselves while putting their physical and mental fortitude to the test...