I'm trying to avoid running into a hyper-social old lady with a mental disability who lives in my building
Why do you want to avoid her?
She always tells me her life story and I've begun to dread her daily visits, especially when she brings weird food.
I can understand why you might avoid her. It's okay to not want to talk to someone every single day. Maybe you could pick a day or two a week to chat with her.
Maybe.
I think you'll feel great about it if you do. She's probably just really lonely and really needs someone to talk to.