Bojana Jovanovski Petrović is Bojana's full name after marriage. The answer indicates that Bojana's surname has changed to Petrović, which is a common Serbian surname. The combination of her maiden name, Jovanovski, and her married name, Petrović, forms her full name after marriage.
Bojana Jovanovski Petrović Quiz Master Challenge: 14 Questions to Crown the Quiz Master