If that person really is saved, then they should get out of the Lutheran Church. Martin Luther taught Sacramental Salvation, which is of course the Catholic, works based, salvation. These are some of Luthers quotes
The Large Catechism "It remains for us to speak of our two sacraments, instituted by Christ. Every Christian ought to have at least some brief, elementary instruction in them because without these no one can be a Christian ... First we shall take up Baptism through which we are first received into the Christian community. ... Moreover, it is solemnly and strictly commanded that we must be baptized or we shall not be saved" (pp. 80-81).
"'He who believes and is baptized will be saved,' that is, faith alone makes the person worthy to receive the salutary, divine water profitably. ... But it becomes beneficial to you if you accept it as God's command and ordinance, so that, baptized in the name of God, you may receive in the water the promised salvation" (pp. 84-85). (Bold added.)
"For here in the sacrament [Communion] you receive from Christ's lips the forgiveness of sins, which contains and conveys God's grace and Spirit with all his gifts, protection, defense, and power against death and the devil and all evils" (The Large Catechism--p. 98).
LUTHER’S SMALL CATECHISM, Concordia publishing, 1971
B. Because Holy baptism is the only means whereby infants, who, too, must be born again, can ordinarily be regenerated and brought to faith;
C. Because infants, also, can believe.
God's Word says we are saved by our faith apart from works
Ephesians 2:8-9 "For by grace you have been SAVED through faith; and that not of yourselves, it is the GIFT of GOD; not as a result of works, so that no one may boast."
Ephesians 1:13 "In Him, you also, after listening to the message of truth, the gospel of your salvation -- having also believed, you were sealed in Him with the Holy Spirit of promise,"
Romans 4:5 "But to the one who does not work, but believes in Him who justifies the ungodly, his faith is reckoned as righteousness."
God also says if you put your faith in your works, you will be severed from Christ, and He will be of no benefit to you.
Galatians 5:4 "You have been severed from Christ, you who are seeking to be justified by law; you have fallen from grace."
Galatians 2:21, “I do not nullify the grace of God, for if righteousness {comes} through the Law, then Christ died needlessly."
Galatians 2:16, “nevertheless knowing that a man is not justified by the works of the Law but through faith in Christ Jesus, even we have believed in Christ Jesus, so that we may be justified by faith in Christ and not by the works of the Law; since by the works of the Law no flesh will be justified.”
Romans 11:6 But if it is by grace, it is no longer on the basis of works, otherwise grace is no longer grace.
We all deserve Hell, and can only go to Heaven by God's grace, by putting our faith in Jesus Christ. There are no "works" that can get us to Heaven, but it is our faith that is reckoned as righteousness. The law was intended as a tutor, to show us that we can't save ourselves, and come to Christ on our knees asking for His atonement, which was given freely by His grace.
Galatians 3:24 Therefore the Law has become our tutor to lead us to Christ, so that we may be justified by faith.
I would recommend testing whether this person really has put their faith in Jesus Christ for her salvation
