So instead of comments, you want questions?
I think that may be possible, but it might not be straightforward.
I assume you're using the WP user integration.
For displaying the questions on Wordpress you'd need some kind of Wordpress plugin where instead of the comments box, you run some custom PHP code to fetch the questions. See here for some hints about accessing Q2A from external code.
Then you'd have a link to the Q2A ask page, with the category in the query string.
Does that cover it? Let me know if there's anything I missed.