[8] She then competed at the Gymnova Cup held in Keerbergen, Belgium, placing fourth in the all-around and winning a bronze medal in the team competition.

She made her senior international debut at the 2023 European Championships and contributed on the vault and uneven bars toward Romania's fifth-place finish.

[13] She was selected to compete at the 2023 World Championships alongside Bărbosu, Voinea, Amalia Ghigoarță, and Andreea Preda.

[18] She finished fourth in the all-around at the 2024 RomGym Trophy, and she won a bronze medal on the uneven bars behind Algeria's Kaylia Nemour and Hungary's Zsófia Kovács.

[19] Later that year, Cosman was selected to compete at the 2024 Summer Olympics alongside Ana Bărbosu, Amalia Ghigoarță, Andreea Preda, and Sabrina Voinea.