karinal1
AU where Demi is still a famous singer, but she is an only child. (Basically she doesn't have Maddie and Amber as sisters, but Dallas is still her sister.) Demi's mother never remarried.
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Demi Lovato has a sister, Delilah, adopted by her mother after she couldn't have any more children. Because her mother was diagnosed with cancer, Delilah has been sent to live with Demi. Only seven years younger than Demi, Delilah knows about all of the things that she's gone through; eating disorders, self harm, bipolar disorder, etc. But, Demi doesn't know that Delilah had been suffering through some of her own problems. Too caught up in her career to notice, will Demi be able to save Delilah before it's too late?