Answer:
Yes, Sarah can revoke the gift to her friend.
Step-by-step explanation:
Gift is the transfer of property from one person, usually the donor(giver) to another person, donee(receiver) without expecting any thing like compensation in return. Gift can be given or transfered to either an individual or organization.
A gift can be revoked by the donor in law. Such gift is called Causa Mortis Gift.
Causa Mortis Gift is a gift given or transfered in expectation of death of the donor. Where a donor gives out his/her gift during the course of undergoing major surgery, such could also be called Causa Mortis Gift. This type of gift can be revoked anytime before the donor's death or recovery from surgery or illness and cannot be revoked after his/her death.