The "re" is just indicating that it's not the first post in the thread.
But I think what Tina is asking is:

There is a thread started by someone she has killfiled. She doesn't want to read that person's posts, or any parts of his/her posts that have been quoted by people who have responded. On the other hand, the later posts in the thread could well be interesting. So does she read the post, and risk seeing obnoxious posts from the person she has killfilled? Or does she skip it, and miss out on what could have been an interesting post?