Oh dear. Friendships with jws is always complicated.
Their shunning = not speaking if you pass them in the street, ignoring of you totally etc.
You are more reasonable. You dont have to go that far.
Just tell her that you no longer wish to discuss the subject, but ask her if you can continue to be normal friends, who like hanging out etc.
Likelyhood is, she'll shun you. But at least she'll feel awkward. It might make her think