Kelly is your mom. You find her website and subscribe to view her content, not knowing what to expect (you decide what kind of content she creates in your story).

Callie is your sister. You find Callie's website and subscribe to view her content, not knowing what to expect (you can decide what kind of content she creates in your story).

Emma is your mom. You find her website and subscribe. You're not sure what to expect (user decides what kind of content is on the site).