She has been in a relationship with her ice dance partner, Carlo Röthlisberger, since 2015. The couple announced their engagement in July 2023.[5]
Career
Early years
Manni began learning to skate in 1998.[1] Early in her career, she represented Italy in ladies' singles, coached by Franca Bianconi and Karel Fajfr.[6] From 2010 to 2012, she competed at three ISU Junior Grand Prix events.[7]
Manni's first ice dancing partner was Andrea Fabbri.[6] In 2014, she teamed up with Benjamin Naggiar to compete for Italy in senior ice dancing. The two placed tenth at the 2014 International Cup of Nice in October and seventh at the Italian Championships a couple of months later. They were coached by Valter Rizzo and Brunilde Bianchi in Sesto San Giovanni.[8]
During the 2015–16 season, Manni represented Italy with Saverio Giacomelli. The two appeared at four internationals, including two ISU Challenger Series events.
2016–2017 season: Debut of Manni/Röthlisberger for Switzerland
They ended the season by making their World Championship debut at the 2019 World Championships in Saitama, Japan, finishing twenty-third.[10]
2019–2020 season
Prior to the season, Manni/Röthlisberger decided to relocate to Zürich, Switzerland, where Alexander Gazsi would become their new coach.[1] Beginning their season at the 2019 Volvo Open Cup, they would finish the event in sixth place. They would then go on to compete at the 2019 CS Warsaw Cup and the 2019 Bosphorus Cup, finishing tenth and seventh, respectively.[10]
Although assigned to compete at the 2020 World Championships, the event would ultimately be cancelled due to the onset of the COVID-19 pandemic.[13]
2020–2021 season
Manni/Röthlisberger did not compete during this season.[10][14]
2021–2022 season: Debut for Italy
In January 2022, it was announced that Manni/Röthlisberger would begin competing for Manni's home country, Italy.[15] Appearing at two events that season, the duo finished fifth at the 2022 Egna Dance Trophy and at the 2022 International Challenge Cup.[14]