The novel ends somewhat abruptly after T. Ray allows Lily to stay with the Boatwright sisters. However, there's just enough time to squeeze in and a happy ending for Lily and her crew.
In addition to getting all kinds of intel on her mom, which is what she set out to do in the first place, she ends up with a whole team of quirky, wonderful surrogate mothers. As Lily marvels in the novel's closing lines:
This is the autumn of wonders, yet every day, every single day, I go back to that burned afternoon in August when T. Ray left. I go back to that one moment when I stood in the driveway with small rocks and clumps of dirt around my feet and looked back at the porch. And there they were. All these mothers. I have more mothers than any eight girls off the street. They are the moons shining over me. (14.227)
And there you have it. Things end happily for Lily, August, Rosaleen, and the whole darn "hive."