Re: to work or not to work
Well, part of what/who she is happens to be a woman with a MBA in fiance who is clearly capable of having a job.
Wait…she’s having a hard time doing something simply to please her husband?! 
She and her family obviously didn’t make it clear to the husband that she had no intention of ever working after marriage despite having an MBA in fiance and despite having a corporate job before. Due to her education/job history, it looks like the husband/his family had an expectation that once the kids are in school, she would do more than be “social”.
This is a relatively easy problem to solve. Even if not a full-time job, she can easily get involved in a local charity and volunteer on a part-time basis. But if she would rather hold onto her ego and not do anything (job or vounteer) to please her husband…then she better get used to the taunts. Whether it’s right or wrong…her husband and his family are not going to change their views on this anytime soon. It sucks for her but she really doesn’t have any other choice as long as she remains in this marriage.