Elected by the leading electronic music magazine in the country as the best singer of 2019 for her performance as Vanessa at the homonymous opera in Guarulhos. Helene has worked with important names in the European lyrical scene, among which stand out the scene directors Peter Konwitschny, with whom Salome toured Switzerland, Bepi Morassi, in production at the Teatro La Fenice in Venice (where she gave life to the character Rosa in the opera Il Piccolo Spazzacamino de Britten) and Stefano Vizioli, in the São Paulo production of Falstaff made by Theatro São Pedro (as Alice Ford), and the conductors Michael Radulescu of Austria (as soloist in Bach's Kantate 110) and Alessandro Sangiorgi, a staunch Italian in Brazil (with whom Mercedes was in Carmen's production at Teatro Guaíra in Curitiba and Norma in concert at the same theater).

In the years she lived in Italy, she received a scholarship from the Italian government and the Antonio Buzzolla Conservatory due to her master's degree in performance and performed in some of the main stages in the country, such as the Teatro Malibran in Venice, the Teatro Comunale de Rovigo and the Teatro Olimpico in Vicenza.

In Brazil, she was twice invited to share the stage with renowned artists from the lyrical milieu in the Grandes Vozes project, first with the baritone Renato Bruson and then with the mezzo-soprano Graciela Araya, both being a public and critical performance.

She participated twice in the Opera Festival of the Theatro da Paz, as Salomé in the opera of the same name (2012), and as Senta in the opera Der fliegende Holländer (2013), the first Wagnerian opera to be performed in the city. Once again as Senta, she sang at the Palácio das Artes in Belo Horizonte in 2018. At the end of 2013 she was invited to replace, on the same day, soprano Eliane Coelho in the difficult role of Médée de Cherubini in the Municipal Theater of Rio de Janeiro with the OSB under the leadership of Argentine Carlos Vieu. Also noteworthy is her performance in the opera La Voix Humaine, directed by Roberto Alvim, who consecrated her to Brazilian critics for her brilliant performance, in her 3 years of touring, Guarulhos 2015, São Paulo 2016 and Rio de Janeiro 2017, for her performance at Sala Cecília Meirelles was voted one of the best of the year 2017 by Movimento.com. She was the protagonist of several Brazilian premieres, the opera by Monteverdi L'incoronazione di Poppea, at the Rio de Janeiro Planetarium (2014), the opera Vanessa de Barber at the Teatro Adamastor in Guarulhos and the world premiere of Martinelli's Peru de Natal as Maria Luísa at Theatro São Pedro, both in 2019.

Helene also stands out as a soloist in symphonic works: in Brazil, Uruguay and Italy she has sung the “Mass for two soloists, choir and orchestra” by Leandro Alvarenga (composed especially for her), the Schubert's “Messe in G-Dur”, Faurè's “Requiem”, Vivaldi's “Magnificat” and “Gloria”, Jommelli's “Veni Creator Spiritus” (Brazilian premiere), Mendelssohn's “Lobgesang”, Mozart's “Vesperae Solennes de Confessore”, Mahler's “2. Symphonie ”and "4. Symphonie", Ravel's “ Scheherazade”, Dvorák's “Te Deum", Beethoven's “9. Symphonie", Villa-Lobos's "Floresta do Amazonas" and Berlioz's "La mort de Cléopâtre". Having been featured at the Brasilia Opera Festival 2014 singing Strauss's “Vier letzte Lieder”.

She has a master's degree in opera performance from the Antonio Buzzolla Conservatory in Italy, having completed her bachelor degree from FAAM and, in addition, a professional actress graduated from William Shakespeare College. His singing teachers were Heloísa Petri, Carmo Barbosa, António Garófalo,  Luisa Giannini (Italy), and Dr. Emilio Pons (NY). In search of perfection, soprano has also participated in several Master Classes with outstanding masters of lyrical singing such as Fiorenza Cossotto, Silvia Sass, Jaime Aragall, Mara Zampieri, Maria Pia Piscitelli, Teresa Berganza, KS Edda Moser, KS Thomas Moser, KS Karan Armstrong , Chuck Hudson, Denis Combe-Chastel, Angelo Raciti, Martin Struckmeyer, Janet Williams, Petra Lang, Carlos Montane and Olga Mykytenko.

She was the winner of the first prize of the Bianca Biancchi Competition in Curitiba (2002), selected in the Audiciones Nuevas Voces Liricas del Teatro Colón of Buenos Aires (2008) and indicated as a promising Wagnerian voice in the Brazilian Auditions of the International Richard Wagner Competition (2009).