[AiyaKai]

I'm in a similar relationship.
But my bf would never renounce his faith.
Eventually if you see this relationship going beyond gf and bf you will have to tell her parents and introduce yourself. If you are a boy she'd be willing to give up her faith for, accept this, and love her and support her, if things don't go well with her parents. She apparently has done much for you already, so don't try asking for more unless you are willing to deal with it.
Talk to her about it if you want to meet her parents and come up with a solution together.