I don't want to meet my step-sister
Why would you not want to meet your step-sister?
I don't want to spend time with someone who doesn't like me. It makes me uncomfortable.
You should at least try to get along. There has to be some way to get along since they are family.
But I am happy where I am.
If you feel your step-sister does not like you then you should ask them why. This may give you insight into how your step sister is feeling. Step family members can be tricky sometimes, as it can be emotionally to have someone else marry into your family.