regardless- in 2 years time pyari83 will be in a better position with an MBA versus having 2 more years worth of experience in customer service.
all advise is from an optimal perspective, but she is not in an optimal situation. if she had 2 years experience in some major consulting firm, ad agency.
all advise in this relies on a couple of things that in the next few years she somehow finds a better role, whether that is by certifications or whatever, and then get experience in that role and then go for an MBA.
looking at the current job market, i think it will be tough. I am a very strong proponent of a few years of good work experience before MBA, but right now she has no guarantee of that.
Pyari, I hope you realize I am not putting you down in any way. I am just having a realistic look at your situation and the surrounding market and trying to find an answer that is more applicable to your needs and situation than optimal situations.