"She was running late" be late = 늦다 running = 달리기 run = 달리다, 뛰다. You might want to say 'she was running late (at meeting/ at appointment...etc)' 그녀는 (미팅에/약속에...)늦었다. If you want to say 'she was running late (in race)' 그녀는 (경주에서) 느리게 달리고 있었다.