Complex sentence: Her pacifism was not at all passive--soon after hostilities broke out, she traveled to Flushing, Netherlands on a mission of mercy and by late October 1914 she was providing food for refugees from the fall of Antwerp.
Split into simpler sentences: Her pacifism was not at all passive--soon after hostilities broke out, she traveled to Flushing, Netherlands on a mission of mercy. By late October 1914 she was providing food for refugees from the fall of Antwerp.