Finding Lydia

Ariana grande finds a 4 year old girl, beaten and bruised sitting by herself on some concrete stairs behind the building. She discovers she is autistic and nonverbal and she's been there by herself with her only source of water and food being from a puddle, raisins. Her dad has been abusing her verbally, physically, and sexually and has now beaten and abandoned her.

Now that Ari has found her, she rescues her and adopts her, and she begins a new life

( please note, i am not an expert on autism so if I get some details wrong I apologize in advance)