With a Catholic, it looks like the Blood of Christ does not really wash one's heart clean (as in 1 Jn. 1:9).
Correct me if I am wrong in this, aMPU.
You have exposed the key to discerning the Catholic error regarding works and salvation by the Grace of God in Christ Jesus. The catholiciism notion of purgatory is an insult to the Cross and an indication of ego not submitted to Whom God has sent. The error is so fundamental that a devout Carholic cannot see it unless The Holy Spirit opens it up to the catholiciism adherent..
“but I think a RCC follower is taught that faith includes works”
Well, sort of.... but that misses the teaching that salvation is found through the church and it’s resacrificing Christ to eat His flesh and drink His blood.
There is the mystical belief it is literally the body and blood, can be worshipped, and must be eaten to have eternal life.
There are some biblical teachings within Roman Catholicism, but it is what is added, often from pagan religions, and what is not taught that fails to teach the Gospel of Grace that saves.
Roman Catholicism teaches you cannot know you have salvation until after death. Just ask one here, if they know they are saved.
Best,
PS - metmom ‘s post here:
http://www.freerepublic.com/focus/religion/3722704/posts?page=24#24
Demonstrates Trent did not teach salvation comes by faith alone.