How do i tell her to her mind her own business?!no offense intended but i need to make this clear.help!?

You don't. You allow Them to express Their Opinions. And then You allow yourSELF- to Ignore Them ! After all; having an "Opinion" about Something- is ALL They're ever going to HAVE! YOU have a Future in front of You to PROVE how Wrong They Are !! So WHY waste Your Breath ? -SHOW Them what You're going to Amount to... For Time is on YOUR Side. ;)