Best recognized for playing Nuria Vega in the Spanish television thriller Bajo sospecha.
She began her career as a model before debuting in Bajo sospecha in 2014. She was 12 years old when she landed the role in Bajo sospecha.
In 2015, she appeared in the telemovie La española inglesa and followed in the 2016 television film Laia. In the 2018 film Miss Dali, a feature film on Salvador Dalí and his relationship with his sister Anna Maria, Berta was cast to play the young Anna Maria.
Her parents are Nuria and Juan Carlos. She has three siblings, one of whom is named Carla.
In Bajo sospecha, she stars alongside Yon Gonzalez.