My sister (friend, relative, etcetera) has offered to wet nurse my baby. Is this ok?

Milk sharing and wet-nursing are and have been common practices across all cultures and socioeconomic situations. All the information here can be applied to wet nursing. One thing to keep in mind is that it can sometimes be more difficult to have an open discussion about risks with people we are close to. It is thus important to use the same discernment with a relative or friend as we do with strangers. Feelings may need to be considered closely to make sure a potential wet nurse does not feel obligated to help because of the relationship. Wet nursing (and/or milksharing) by a close friend or relative can be a very satisfying experience for everyone involved.