She is the reigning junior co-world champion in the 50 m backstroke and won a bronze in the 100 m backstroke .
In total Hannah won 4 medals at the world junior championships , including three gold and one bronze .
Hannah is the reigning junior co-world Hannah in the 50 m backstroke and won a bronze in the 100 m backstroke .
In total Hannah won 4 medals at the world junior championships , including three gold and one bronze .