Complex sentence: She founded an ashram and published poetry under the name'Tandra Devi'; she took the name Swami Omananda Puri after her husband's death when she took sannyas (or renunciation of worldly life).
Split into simpler sentences: She founded an ashram and published poetry under the name Tandra Devi. She took the name Swami Omananda Puri after her husband's death when she took sannyas (or renunciation of worldly life).