Just do it. You will find that you are a bigger person for it.
why keep the tension in the family, just say happy birthday. my fam has grown apart but no matter how much we cant stand eachother, we always wish eachother a happy birthday or a happy holiday. its just for 1 day.
Yes you must - life is short
No. Were they bothered about you?
My sisters b day is tommorrow too!!! But shes two and yes u should conract her she will apreciate it
sure, it won't do no harm. your sister might even feel humbled.
yes family is always family
I say, just leave a "happy b-day", I know even I wouldn't exactly admit it, I'd be happy to receive that from a family member :P
I think it would be a nice gesture of you to wish her a happy birthday. From that reaction, you can still decide if you like to continue keeping contact or not.
Sometimes you just have to take the first step even if they wouldn't really deserve it in your own opinion=).