Michele~
Seems to me that what you do with your own life is your business. Who you choose to befriend is of your own accord and shouldn't have any effect on your sister.
Apparently, your sister may have some serious jealousy issues about you, perhaps?
Your sisters ex husbands wife? I can't help but to wonder..why would your sister even give a rats rear about what her EX does, anyway. let alone his wife?
Sounds to me this may be a sibling rivalry issue with her. Regardless...this is HER problem...let her keep it for herself. Try not to allow her to affect you. You're doing nothing wrong.....
Damn...If I had a dime for every time my family disapproved of my choices & behavior, I coulda bought Kristian's way out of Holland by now....
Shangrala