María Isabel Díaz Lago was 21 in Una novia para David when she played the character 'Ofelia'.
That was over 37 years ago in 1987.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 59, and has starred in 17 movies in total, 16 of those since Una novia para David was released.
In Una novia para David, I think María Isabel Díaz Lago looks: