Alessandrini began learning to skate in 1994. She skated with Tommaso Forchini early in her ice dancing career.
Partnership with Vaturi
In 2007, she teamed up with Simone Vaturi. Representing Italy, they placed fifth at the 2010 World Junior Championships. Later that year, Alessandrini broke a rib in training causing them to miss the 2010–11 Grand Prix season. They returned to competition to win the senior bronze medal at the Italian Championships and were assigned one of Italy's two ice dance berths to the 2011 European Championships. They finished 16th in their first appearance at the event. In the 2011–12 season, Alessandrini/Vaturi made their senior Grand Prix debut at 2011 NHK Trophy where they finished 5th. They again finished third at the Italian Championships. They were not named in the Italian team to the European Championships. Alessandrini/Vaturi were coached by Roberto Pelizzola and Nicoletta Lunghi in Italy until January 2012 when they moved to Detroit, Michigan to train under new coaches Pasquale Camerlengo, Massimo Scali, and Anjelika Krylova. They made their senior World debut at the 2012 World Championships in Nice, France. In mid-December 2012, a fall while training a lift resulted in an injury to Vaturi and the team's withdrawal from the 2013 Italian Championships. Vaturi ended their partnership in April 2014. In May, Alessandrini confirmed she was looking for a partner to continue her competitive career and expressed interest in eventually becoming a coach and choreographer.
Partnership with Souquet
Alessandrini teamed up with French ice dancer Pierre Souquet by July 2014. In December, the duo placed fourth at the French Championships. Making their international debut, they placed 5th at the Bavarian Open in February 2015. Alessandrini/Souquet won their first international medal, silver, in October 2015 at the Cup of Nice, before taking silver at the French Championships in December. The following month, they competed at the 2016 European Championships in Bratislava, Slovakia. Ranked 16th in the short dance, they qualified to the free dance and finished 20th overall. They were coached by Muriel Zazoui, Olivier Schoenfelder, Diana Ribas, and Roberto Pelizzola in Lyon. Making their Grand Prix debut, Alessandrini/Souquet placed 9th at the 2016 Trophée de France. They received the bronze medal at the French Championships.
