Answer:
She took the veil of religious life from Francis and from that moment vowed to live her life entirely in the service of Jesus, her heavenly spouse.
St. Clare followed her path unwaveringly, adopting the rule of St. Benedict tempered with Francis’s preaching of poverty. She soon gathered a large female following at San Damiano and Francis urged her to set up a convent there. She did so and became abbess of the new community known as the Poor Clares. Clare’s mother and sisters later joined the order, and there are still thousands of members today.
Very little is known about St. Clare’s life in the cloister. We know she became a living example of the poverty, humility, and mortification expounded by St. Francis. Like St. Francis, Clare was known for her many miracles. Among her most famous feats is using a consecrated Host to ward off invaders. She displayed the Sacrament in a monstrance at the convent gates, and prayed before it; the attackers left.