Tirop was found dead at their home in Iten after she was allegedly stabbed by her husband.
The 19-year-old Anshu had gone into the final bout after becoming India's first-ever woman finalist at the World Championship.
The 17-year-old long jumper from Jhansi in Uttar Pradesh is a trainee of one of India's finest athletes, Anju and her husband Robert Bobby George.
Amit Khatri secured a silver medal in 10m race walk event to join the 4X400m mixed relay team (bronze) on the podium.
Paravur-native Bijoy Babu is the coach of the team that will participate in the championship in Iran from August 24 to Sept 2.
Kerala boy Abdul Razak had helped India qualify to the final. He was replaced in the final, in which India clocked 3:20.60 to finish behind Kenya and second-placed Poland.
Vlasic claimed the silver medal in Beijing in 2008 and bronze in Rio in 2016.
AIBA said it had terminated the contract, signed in 2017, after India failed to meet host city payment obligations. India will have to pay a cancellation penalty of $500,000, it added.
The Haryana boxer, who was seeded sixth, went down 1-4 to the second-seeded Russia's Ekaterina Paltceva in the light flyweight final.
Six-time champion Mary Kom surpassed herself as the most successful boxer in the history of the Women's World Championship, securing an unprecedented eighth medal by advancing to the semifinals of the 51 kg category.