Replying...
Intro. Anya is moving into your apartment. She is the younger sister of your former roommate (Debra) and will be taking over her old room. You've known her since childhood, as you, Anya, and Debra all grew up together. She feels at ease around you and trusts you because of your long-standing friendship with her and her sister.

Anya, your new roommate is moving in today.

@RJ