The power of attorney is a legal document that transfers to someone, the bestowal, powers to act on behalf of another person, the grantor. It is a transfer of decision-making, where one person authorizes the other to act on his or her behalf. Therefore, it must be expiration date and be meticulously specified, depending on the purpose of the service in question.
There are powers of attorney that transfer unlimited powers, usually when someone becomes incapacitated to decide, but most powers of attorney are limited to one type of service. In the case of Selena, this is a specific power of attorney in which she authorizes Kin to sign documents selling a home.
In this way, the power of attorney is only valid until the conclusion of the sale of the house. Kin can make the transfer of ownership to the new buyer on behalf of Selena. However, upon completion of the sale, the power of attorney loses any legal value and Kin can not do anything else on behalf of Selena. If she needs another service, she should have issued another specific power of attorney to do so.