LVIV, Ukraine—Almost eight years ago, Slovyansk, a small city in western Ukraine, was the first to be captured by pro-Russian separatists. Svetlana Isakova, 42, did not flee the city back then, but sent her daughter away to safety. After days of fighting and shelling, the Ukrainian military recaptured the city on July 5, 2014. The separatists fled to Donetsk. After Russia invaded Ukraine late last month, the first explosion that Isakova heard brought back the memories and trauma of 2014, when she spent a week in a bomb shelter. This time, Isakova fled, taking her daughter, son, and three grandchildren along. The two women and four children found a taxi driver willing to pick them up when an air raid alert was in place. They traveled for two days and arrived at the Lviv train station late on March 23. “It’s just to keep the children safe,” Isakova told The …