How to deal with a roommate that curses a lot?

I have a foreign roommate that goes with me to the same university. For some reason, she curses like a whole lot! It’s reaching the point where it’s seriously starting to bother me. What should I do?! I tried requesting for a room transfer but sadly, all the other rooms are occupied. I’m tired of her attitude! My nana told me there’s nothing I can do about it, and even told me to include her in my prayers. How do I tell her that what she’s doing is really infuriating and offensive? Please give me some advice!