The problem isn’t what the phrase says; instread, it’s what it doesn’t say.
You might start a discussion with your friend, and ask them to show you in scripture where it says what she has proposed. You might also ask her about baptism. Be prepared to provide plenty of scripture on baptism to back up the Catholic position.
Once you’ve discussed baptism there are many other areas to explore. You can talk about John 6, the Last Supper, and the Eucharist in terms of salvation. Make sure you study up on this before you present it. Do a search on the forum to learn all of the arguments or send me a PM with your email address and I’ll send you a file or two with good materials on this topic.
As far as baptism and salvation is concerned here are some scriptures to use with your friend:
And now why do you wait? Rise and be baptized, and wash away your sins, calling on his name.’
Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit,
Jesus answered, "Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.
He who believes and is baptized will be saved; but he who does not believe will be condemned.
ROMANS 6: 3-4
Do you not know that all of us who have been baptized into Christ Jesus were baptized into his death? We were buried therefore with him by baptism into death, so that as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life.
For as many of you as were baptized into Christ have put on Christ.
In him also you were circumcised with a circumcision made without hands, by putting off the body of flesh in the circumcision of Christ;
and you were buried with him in baptism, in which you were also raised with him through faith in the working of God, who raised him from the dead
one Lord, one faith, one baptism,
but when the goodness and loving kindness of God our Savior appeared, he saved us, not because of deeds done by us in righteousness, but in virtue of his own mercy, by the washing of regeneration and renewal in the Holy Spirit,
let us approach with a true heart in full assurance of faith, with our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.
1 PETER 3:21
Baptism, which corresponds to this, now saves you, not as a removal of dirt from the body but as an appeal to God for a clear conscience, through the resurrection of Jesus Christ,
OT-- Baptism prefigured
I will sprinkle clean water upon you, and you shall be clean from all your uncleannesses, and from all your idols I will cleanse you. A new heart I will give you, and a new spirit I will put within you; and I will remove from your body the heart of stone and give you a heart of flesh. I will put my spirit within you, and make you follow my statutes and be careful to observe my ordinances. Then you shall live in the land that I gave to your ancestors; and you shall be my people, and I will be your God.