history: MY sister used to live in the apartment across the hall from me. She moved away. my sister used to live in the apartment across the hall from me That's great!  Did she move recently?  Do you miss her? She moved recently. Its pretty lonely over here now
current: I'm sorry.  That can be so tough when you're used to her being so close.  Did she move far away?
next: across town. i miss my neice the most