Viking and Stabæk In 2019, Vallotto made her debut in senior football for Viking in the
Second Division, the domestic third tier. She made six league appearances for the club at age 15, being regarded as a prospect. Ahead of the 2020 season, Vallotto moved to
Stabæk. On 3 July 2021, she made her debut in
Toppserien, the domestic top tier, in a 0–4 loss against
LSK.
Hammarby IF On 16 August 2023, Vallotto transferred to
Hammarby IF in the Swedish
Damallsvenskan, signing a two-and-a-half-year contract. On 1 September, she made her debut for the club in a 3–0 away win against
Växjö DFF, coming on as a substitute and scoring the last goal of the game. The club won the
2023 Damallsvenskan, claiming its second Swedish championship after 38 years, with Vallotto making nine league appearances. ==International career==