Complex sentence: During the "Quest for Magik" arc, she was transported to Limbo alongside the other students and was captured by Belasco, she returned to the school with the rest of her classmates when Magik/Darkchilde sent them all back to the human world.
Split into simpler sentences: During the "Quest for Magik" arc, she was transported to Limbo alongside the other students and was captured by Belasco. She returned to the school with the rest of her classmates when Magik/Darkchilde sent them all back to the human world.