Use Node Gallery Access with Node_Gallery so you can control who views the a gallery.
You can set up a private gallery then control who views the gallery. Galleries can be public, private, or password protected. The private and password protected galleries can be controlled by role. You could set up a role named Family and assign the role to members of your family then place family photographs in a gallery connected to the Family role.
Download Node Gallery Access from drupal.org/project/node_gallery_access.