You mentioned that the people influencing your wife are “Oneness.” That means Pentecostal, but non-Trinitarian, and baptism in the name of Jesus only, in violation of the instructions Our Lord gave the Apostles (Mt 28:18-20).
My suggestion: Tell your wife that Catholics make a profession (confession) of faith every Sunday when we say the Nicene-Constantinopolitan Creed, "I believe . . . ". And we make a confession of faith every time we form a queue to receive Our Lord Truly Present, Body and Blood, Soul and Divinity, in the Holy Eucharist, and we say “Amen” (so be it, it is true). We “accept Jesus Christ as our personal Lord and Savior” each time we receive the Eucharist into ourselves, the spiritual food which transforms us (we are becoming what we eat – more like Christ). We formally renew our baptismal vows in the presence of the whole Church at least yearly, at the Easter liturgy. We can renew them anytime we wish.
Does your wife realize that the Catholic Church is the only Church made by God? All others are man made. Does she know that the New Testament consists of 27 of the Church’s own writings? She might want to tell her Protestant friends.