All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad (
) is His Slave and Messenger.
It is not valid for a woman to marry herself off or to conduct the marriage of another woman, meaning that she may not personally carry out the marriage contract. Rather, the one who conducts the marriage contract for a woman is her guardian, such as her father, grandfather, brother, and the like.
As for matchmaking between men and women for the purpose of engagement and marriage, this is permissible for a woman and is not related to the prohibition mentioned in the ahadith (prophetic narrations); provided that the marriage is completed in accordance with all of its essential legal requirements and prescribed Islamic conditions.
Allah Knows best