On September 2020, my good friend filed a I-130 for his daughter. She was 19 yo at the time, ( five months away from turning 20) and pregnant. About 8 months after filing, he received an RFE asking for proof of relationship between him and his daughter. When filing the I-130 we submitted a copy of birth certificate where is stated that she is his legitimate daughter, he did not know what to send so he did not send anything and pretty much gave up. With this situation and his daughter moving to Norway with the father of her child, he did not think of it anymore. Fast forward on october 28 2022 he received an email from the NVC saying: "Notice of Immigrant visa creation" stating that they received an approved application from USCIS and they were ready to process his daughter's immigrant visa. His daughter is back in Argentina, still unmarried but with a baby and having lived in Norway for only 9 months.
Question: Since clearly now she has turned over 21, has her visa category changed? How can we know her visa category?
Thank you