She deputized her brother to perform throwing the pebbles for fear for herself

A: If the reality is as you mentioned, that you faced hardships, then your appointing of the person mentioned in the question to stone on your behalf is valid. As for omitting Tawaf Al-Wada', each one of you has to offer Fidyah (ransom) which is a sheep that meets the same conditions for an Ud-hiyah (sacrificial animal offered by non-pilgrims) and it should be slaughtered in Makkah. Its meat should be distributed among the poor there. If you cannot afford this, then you have to fast ten days. (Part No. 10; Page No. 320) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.