Secret Life of the Hogwarts Greenhouse

For Lyrrie. Different Hogwarts House trope. When Astoria Greengrass is sorted into Ravenclaw instead of Slytherin she never expected to make friends. She didn't even expect to make it to the next year. But when she makes the friends with Luna Lovegood things start to change for her. Did she find a best friend or could this possibly be love?