The book on her coffee table is titled:
Agenda Civil del Estato Mexico 2017
Which translates to:
Civil Agenda of the State of Mexico 2017
It is a book of Civil Code, Laws and Regulations in Mexico. So she was certainly involved in the study of law. Whether she was a Gendarmerie or an Agent of the Federal Police is still unclear.
At around 7.30pm on 15th March 2018, 37 year old José Antonio Aguado Plata shot dead his neighbour 35 year old Berenice Mata Galindo in her home. There had been a dispute between them. José was injured + taken to hospital.