Her name was Montserrat Gurguí and she was an award-winning Spanish-to-English translator. Apparently she was best known for her translations of James Ellroy alongside her translating partner-in-crime (pun intended: they translated many crime novels), Hernán Sabaté. In this other obit a friend or her mentions a specialist crime novel bookstore in Barcelona, Negra y Criminal where patrons and owners were fans of their translation work. She also worked on historical novels, as mentioned here.

On ET, she didn't write any diaries but was an occasional commenter and a frequent contributor to the photoblog. She lived by the sea North of Barcelona, and had taken to weather photography. She used to submit photos to a local TV program (El Temps del Picó, on Barcelona TV) and once won a weather station in a competition on cloud photography. She was also paid homage after her death in Picó's program. Here's one of her last pictures on ET's photoblog:

Sunrise at Canet de Mar, 25 October, 2009.

I first met her in Barcelona at a mini-meetup in 2007, and then at the end of 2008 as I and ThatBritGuy drove through on my move from London to Madrid we stopped at her place. Then in 2009 we had another mini-meetup when ETer the stormy present visited Barcelona. I last saw her about a year ago - she had just started treatment for her illness and was quite upbeat.

One of the best things about ET is that it gives us the opportunity to meet extraordinary people.