I think it's a matter of whose heart is more open to Christ. It seems yours is.
Any religious practice or sacrament taken without the proper perspective is not very effective. I know many people think just because they go to mass on Sunday they'll go to heaven. And Protestants believe that just as long as they've accepted Jesus as their Lord and Savior, they merit heaven.
To have a good heart is good but it isn't enough. As Catholics we are taught to have both faith and do the work. It's not either/or. It's AND. That is what will save us and get us to heaven.
You can tell your friend tactfully of the "truth" but it is her choice to believe. Like I said, it is the openness of one's heart to receive truth that will help your friend.
And pray for her that she'll open her heart to Jesus.

God bless.