Nothing happens. I go back to Mrs. Bell, and after I hit spacebar, I think she says the same thing as she did in the beginning (don't quite remember), and I can't move past her to go to the stairs. I stopped after that, sorry!
Viewing post in Lost in Bloom (Demo) jam comments
I delivered all the letters on the first floor. On the second floor, I learned that it's my apartment, an empty apartment, and Mrs. Bell's apartment. I didn't deliver any letters on that floor. Then I went to talk to Mrs. Bell. I hit spacebar, but she didn't say anything, and I couldn't move past her. Nothing happens after that.