I believed I read this story in Asimov's in the early 1980s, but last year I re-read (most of?) them, and I didn't come across it. I'm 90% sure I read it in a magazine, the next most likely being F&SF or Analog.
The protagonist is an older woman, who lives, I believe, in urban Chicago. She has a fancy apartment that was part of a settlement with the company she formerly worked for, but only ever goes out for walks.
She had been the leader of a team that invented some kind of teleportation device, which worked perfectly except for the fact that it was really a duplication not a transmission device. To get around the fact of creating copies of people, the company settled on packaging it in a closed booth where the outgoing person was electrocuted and disposed of immediately following the teleport.
This freaked out the protagonist to the point that the company decided to cut her out. Using a combination of a carrot (a really nice home, great pension) and a stick (a draconian non-disclosure agreement) the company shunted her off to her (Chicago?) apartment and went about commercializing the invention. But she, knowing how it worked, refused to use it.
The story is framed as a series of conversations she has with a young boy who lives in her neighbourhood. He has noticed that she never uses the teleportation booths, and she tells him her story as she explains why. At this point in her life she's mostly stopped worrying about what the company will do to her, but now that the teleportation booths are everywhere there aren't any cars anymore. The one thing she wants to do is go back to the small town she grew up in, but there's no way to get there without using a teleportation booth.
The story ends with the boy shoving her into a teleportation booth and coding it to send her to her town. She stands there briefly confused and is horribly electrocuted — and then steps out of the booth on the other end, thinking that there wasn't anything to worry about, and she'll be fine using the booths from now on.