Dean Winchester's little sisters

A little bit of explanation

So I'm reading over this book thinking wtf was going through my head at the time. How do they know each other? Why didn't they all grow up together? Let me explain.
So when Jenny and Elisa were born their parents knew that their children were extremely powerful so they sent them away to a foster family. So for the first 3 years of Jenny's life she new that she was given up and why, she always asked to see and send pictures to her brother so he won't forget her and they would stay in touch. Elisa wasn't really put in the loop till she was older so 🤷🏻‍♀️ Jenny was devastated to know that her mother was killed but she knew her brother wouldn't look for them but she kept tabs on them while she grew up. Being raised by hunters came in handy, they were usually put in danger but they were still living. Fast forward a couple years to where they were in middle school 14 years old they met their friend Alex she was a hellhound angel. Sounds stupid right? Nah not with a life of supernatural people, but people with abilities were rare so the whole Winchester having having powers not a coincidence. So they met Alex while they were on a hunt with their 'parents' suddenly attacked by an invisible creature, after 20 minutes (they could not use their abilities till they turn 20) they was saved by an invisible person. They soon became friends with the hybrid and met her friends.
( I might take out The Sherlock addition to the story and fill in stupid gaps but I will try to edit this story) your feedback will help a lot
~~Til next time my little demons and angels 😈😇