A mystery resolved! It seems that Agathe from Style bytes never truly disappeared: she had simply been posting her photos on a new site called "Phiary". Although I miss the old blog and the more extensive and regular posting I like the simple photo story style of Phiary...
Her new short haircut makes her look like the prettiest wild pixie in the blogosphere. I love it! Make sure to check out her new look on http://phiary.com/diary/stylebytes