Complex sentence: Gretchen didn't strengthen during her lifetime due to her proximity to Francesca and was nearly absorbed by her because Francesca disorganized Gretchen, the last advisory was issued on September 11.
Split into simpler sentences: Gretchen didn't strengthen during her lifetime due to her proximity to Francesca and was nearly absorbed by her because Francesca disorganized Gretchen. The last advisory was issued on September 11.