Complex sentence: Alexis knows little or nothing about her family's past and has always resented her mother's for refusing to discuss it, she knows only that her mother, Sofia grew up in Plaka, a small Cretan village, before moving to London.
Split into simpler sentences: Alexis knows little or nothing about her family's past and has always resented her mother for refusing to discuss it. She knows only that her mother, Sofia grew up in Plaka, a small Cretan village, before moving to London.